Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, 4 inch ASA Inlet Flange, 9 inch OD, Maximum Pumping Speed 1200 l/s Standard Cold Cap, 120 VAC 1450 Watt Heater, Agilent Varian Part Number 82906301 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 1200 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: 4 Inch ASA Inlet Flange (9 Inch OD Flange, 8 Bolts Holes, 0.75" Diameter Bolts) KF40 Outlet Flange Standard Cold Cap 1200 l/s Maximum Pumping Speed Air 120 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ASA 4 inch inlet flange, operate on 1-phase 120 VAC, standard cold cap and has Agilent Varian part number 86460301. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, 4 inch ASA Inlet Flange, 9 inch OD, Maximum Pumping Speed 950 l/s Extended Cold Cap, 120 VAC 1450 Watt Heater, Agilent Varian Part Number 82906311 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 950 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: 4 Inch ASA Inlet Flange (9 Inch OD Flange, 8 Bolts Holes, 0.75" Diameter Bolts) KF40 Outlet Flange Extended Cold Cap 950 l/s Maximum Pumping Speed Air 120 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ASA 4 inch inlet flange, operate on 1-phase 120 VAC, extended cold cap and has Agilent Varian part number 86460311. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, 4 inch ASA Inlet Flange, 9 inch OD, Maximum Pumping Speed 1200 l/s Standard Cold Cap, 208 VAC 1450 Watt Heater, Agilent Varian Part Number 82906306 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 1200 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: 4 Inch ASA Inlet Flange (9 Inch OD Flange, 8 Bolts Holes, 0.75" Diameter Bolts) KF40 Outlet Flange Standard Cold Cap 1200 l/s Maximum Pumping Speed Air 208 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ASA 4 inch inlet flange, operate on 1-phase 208 VAC, standard cold cap and has Agilent Varian part number 86460306. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, 4 inch ASA Inlet Flange, 9 inch OD, Maximum Pumping Speed 950 l/s Extended Cold Cap, 208 VAC 1450 Watt Heater, Agilent Varian Part Number 82906316 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 950 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: 4 Inch ASA Inlet Flange (9 Inch OD Flange, 8 Bolts Holes, 0.75" Diameter Bolts) KF40 Outlet Flange Extended Cold Cap 950 l/s Maximum Pumping Speed Air 208 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ASA 4 inch inlet flange, operate on 1-phase 208 VAC, extended cold cap and has Agilent Varian part number 86460316. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, 4 inch ASA Inlet Flange, 9 inch OD, Maximum Pumping Speed 1200 l/s Standard Cold Cap, 240 VAC 1450 Watt Heater, Agilent Varian Part Number 82906302 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 1200 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: 4 Inch ASA Inlet Flange (9 Inch OD Flange, 8 Bolts Holes, 0.75" Diameter Bolts) KF40 Outlet Flange Standard Cold Cap 1200 l/s Maximum Pumping Speed Air 240 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ASA 4 inch inlet flange, operate on 1-phase 240 VAC, standard cold cap and has Agilent Varian part number 86460302. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, 4 inch ASA Inlet Flange, 9 inch OD, Maximum Pumping Speed 950 l/s Extended Cold Cap, 240 VAC 1450 Watt Heater, Agilent Varian Part Number 82906312 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 950 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: 4 Inch ASA Inlet Flange (9 Inch OD Flange, 8 Bolts Holes, 0.75" Diameter Bolts) KF40 Outlet Flange Extended Cold Cap 950 l/s Maximum Pumping Speed Air 240 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ASA 4 inch inlet flange, operate on 1-phase 240 VAC, extended cold cap and has Agilent Varian part number 86460312. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, ISO 160K Inlet Flange, 9 inch OD, Maximum Pumping Speed 1200 l/s Standard Cold Cap, 120 VAC 1450 Watt Heater, Agilent Varian Part Number L6256301 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 1200 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: IS0 160K Inlet Flange (No bolt holes, attached with 4 to 8 claw clamps) KF40 Outlet Flange Standard Cold Cap 1200 l/s Maximum Pumping Speed Air 120 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ISO 160K inlet flange, operate on 1-phase 120 VAC, standard cold cap and has Agilent Varian part number L6256301. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, ISO 160K Inlet Flange, 9 inch OD, Maximum Pumping Speed 950 l/s Extended Cold Cap, 120 VAC 1450 Watt Heater, Agilent Varian Part Number L6256311 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 950 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: ISO 160K Inlet Flange (No bolt holes, attached with 4 to 8 claw clamps) KF40 Outlet Flange Extended Cold Cap 950 l/s Maximum Pumping Speed Air 120 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ISO 160K inlet flange, operate on 1-phase 120 VAC, extended cold cap and has Agilent Varian part number L6256311. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, ISO 160K Inlet Flange, 9 inch OD, Maximum Pumping Speed 1200 l/s Standard Cold Cap, 208 VAC 1450 Watt Heater, Agilent Varian Part Number L6256306 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 1200 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: IS0 160K Inlet Flange (No bolt holes, attached with 4 to 8 claw clamps) KF40 Outlet Flange Standard Cold Cap 1200 l/s Maximum Pumping Speed Air 208 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ISO 160K inlet flange, operate on 1-phase 208 VAC, standard cold cap and has Agilent Varian part number L6256306. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, ISO 160K Inlet Flange, 9 inch OD, Maximum Pumping Speed 950 l/s Extended Cold Cap, 208 VAC 1450 Watt Heater, Agilent Varian Part Number L6256311 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 950 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: ISO 160K Inlet Flange (No bolt holes, attached with 4 to 8 claw clamps) KF40 Outlet Flange Extended Cold Cap 950 l/s Maximum Pumping Speed Air 208 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ISO 160K inlet flange, operate on 1-phase 208 VAC, extended cold cap and has Agilent Varian part number L6256316. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, ISO 160K Inlet Flange, 9 inch OD, Maximum Pumping Speed 1200 l/s Standard Cold Cap, 240 VAC 1450 Watt Heater, Agilent Varian Part Number L6256302 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 1200 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: IS0 160K Inlet Flange (No bolt holes, attached with 4 to 8 claw clamps) KF40 Outlet Flange Standard Cold Cap 1200 l/s Maximum Pumping Speed Air 240 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ISO 160K inlet flange, operate on 1-phase 240 VAC, standard cold cap and has Agilent Varian part number L6256302. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian VHS-4 Water Cooled Vacuum Diffusion Pump, ISO 160K Inlet Flange, 9 inch OD, Maximum Pumping Speed 950 l/s Extended Cold Cap, 240 VAC 1450 Watt Heater, Agilent Varian Part Number L6256312 The Agilent Varian VHS-4 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This VHS-4 is the smallest of the VHS series pumps being well suited for laboratory and research use. The VHS-4 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-9 Torr. The Agilent Varian VHS-4 is ideal for applications requiring fast cycling because of its high pumping speed (maximum rated at 950 l/s) air combined with high forepressure tolerance (0.65 Torr with no-load and 0.55 Torr when at full gas load). Backstreaming rate of the unit is 1x10-4 mg/cm2/ min, without the use of any cooled cold cap. This Agilent Varian VHS-4 Diffusion Pump Includes: ISO 160K Inlet Flange (No bolt holes, attached with 4 to 8 claw clamps) KF40 Outlet Flange Extended Cold Cap 950 l/s Maximum Pumping Speed Air 240 VAC @ 1450 Watt Heater 4 Water Connections 3/8 in. FPT Pipe, 1/8 Barbed Ceramic Bushing Centering ring for ISO foreline flange, KF40 Installation and Operation Manual Designed To Be Used With Santovac 5 Diffusion Pump Oil Diffusion pumps use a high-speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the outlet. The oil diffusion pump is operated with an oil that has low vapor pressure (Santovac 5 oil)). Its purpose is to achieve higher vacuum (lower pressure) than possible by use of positive displacement pumps alone. The Agilent Varian VHS-4 can pump down to pressures of <5x10-9 Torr. Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump, roughing pump is typically used to maintain an outlet pressure around 1 mTorr. These Agilent Varian Diffusion Pumps are very reliable, simple in design and operate with no noise or vibration. Diffusion pumps are still the most economical means for creating high-vacuum pressures. Diffusion pumps also tolerate operating conditions such as excess particles and reactive gases that would destroy other types of high-vacuum pumps. They can be ordered with a 1-phase 115, 208, 240 VAC heater harness and with standard or extended cold cap. We stock and sell Santovac 5 diffusion pump fluids for this pump. Please see below in our “Related” section for additional accessories that may benefit your vacuum applications and maintenance needs. We offer a large variety of vacuum greases, oils, vacuum fittings, hoses, vacuum gauges, sensors/transducers, parts and accessories sold separately on this website. These Agilent Varian VHS-4 diffusion pumps have ISO 160K inlet flange, operate on 1-phase 240 VAC, extended cold cap and has Agilent Varian part number L6256312. The Agilent Varian VHS-4 diffusion pump user’s instruction manuals can be downloaded in PDF format below. These are typical stock items that often ship same day as order is placed.

Agilent Varian Thermal Switch for VHS-4, 6,10, 250, & 400 Diffusion Pumps PN 642906025 This is the Agilent Varian VHS-4, VHS-6, VHS-10, VHS-250, VHS-400 Diffusion Pump replacement Thermal Switch. (Set at 300º F, 148º C). See No. 15 below in illustration for thermal switch location on a VHS-4

Agilent Varian VHS-4 and VHS-6, Diffusion Pump Thermal Switch Kit. Agilent Varian PN L8912301 This is a Thermal Switch Kit. Fits the Agilent Varian Vhas-4 and VHS-6 Diffusion Pump. For location of the baffle retaining ring see item #7 on (diagram exploded view & parts illustration) below. This Thermal Switch Kit includes: Thermal Switch Lug Wire Box Insulator

Agilent Varian VHS-4 Diffusion Pump Replacement Heater, 1450W, 120 VAC. Agilent Part Number: 647304205. This is a replacement heater for the Agilent Varian VHS-4 Air Cooled Diffusion Pump, 1450W, 120 VAC. 1 heater required per pump.

Agilent Varian VHS-4 Diffusion Pump Replacement Heater, 1450W, 208 VAC. Agilent Part Number: 647304210. This is a replacement heater for the Agilent Varian VHS-4 Air Cooled Diffusion Pump, 1450W, 208 VAC. 1 heater required per pump.

Agilent Varian VHS-4 Diffusion Pump Replacement Heater, 1450W, 240 VAC. Agilent Part Number: 647304250. This is a replacement heater for the Agilent Varian VHS-4 Air Cooled Diffusion Pump, 1450W, 240 VAC. 1 heater required per pump.

Agilent Varian VHS-4 Diffusion Pump Heater Insulator, Replacement Part, For New Style Diffusion Pumps.Agilent Varian Part Number 86087001. These Agilent Varian VHS-4 diffusion pump heater insulators are used to insulate the heater from pumps bottom cover. These heater insulators are used in the new-style diffusion pumps. These are OEM Agilent Varian replacement parts with part number 86087001, see #11b below in illustration for heater insulator location.

Agilent Varian VHS-4 Air Cooled Diffusion Pump Heater Clamp PN 88164301 This is a replacement heater clamp for the Agilent Varian VHS-4 Air Cooled Diffusion Pump. 1 required per pump.

Agilent Varian VHS-4, VHS-6 and VHS-250 Air Cooled Diffusion Pump Heater Wire, 10 AWG, 24 inch length, 1 each PN X3901-68001 This is (one) replacement heater wire for the Agilent Varian VHS-4, VHS-6 and VHS-250 Air Cooled Diffusion Pump. 24 inch length, 3 required per pump.

Agilent Varian VHS-4 Sight Glass Repair Kit, Diffusion Pump Replacement Parts Agilent Varian Part Number L8908301 These Agilent Varian VHS-4 oil sight glass kit are OEM Agilent Varian replacement parts and have part number L8908301. This kit fits the new modern style VHS-4 model diffusion vacuum pumps. The parts for this kit are shown in item #17 in the illustration below.

Agilent Varian VHS-4 Air Cooled Diffusion Pump replacement O-Ring Kit (for ASA4 inch inlet) K0377183 PN K0377183 Agilent Varian VHS-4 Air Cooled Diffusion Pump replacement O-Ring Kit (for ASA4 inch inlet). O-Ring Replacement Kit Contains: 3 - Inlet Flange O-Rings (butyl 2-258) rubber 10 - Fill and Drain O-Rings Old Style (Viton 2-113) rubber 10 - Fill and Drain O-Rings New Style (Viton 2-113) rubber 1- Sight Glass O-Ring and Gasket no. 2-226 1- PTFE Gasket

Agilent Varian VHS-4 Diffusion Pump Replacement Jet Assembly Top Level. Aginet Varian PN F4785301 This is the Agilent Varian VHS-4 diffusion pump jet assembly replacement parts. This kit includes the complete jet assembly components, see location of Jet Assembly in Fig. 3-3 in instruction manual PDF below. These are original OEM Agilent Varian replacement parts for the VHS-4 diffusion pump.

Agilent Varian VHS-4 Foreline Baffle Assembly, Diffusion Pump Replacement Parts. Agilent Varian Part Number 86754301 These Agilent Varian VHS-4 diffusion pump replacement foreline baffle assemblies are OEM Agilent Varian replacement parts with part number 86754301. The foreline baffle is located in the roughing line exhaust arm of the diffusion pump. They are designed to help prevent diffusion pump oil from being transported to the roughing pump under high throughput conditions. See the VHS-4 diffusion pump roughing line arm noted by balloon #4 in the illustration below.

Agilent Varian VHS-4 Ceramic Insulator for Cold Cap, Diffusion Pump Replacement Part Agilent Varian Part Number 699006025 These Agilent Varian VHS-4 ceramic insulators are OEM Agilent Varian replacement parts for the VHS-4 diffusion vacuum pumps, having Agilent Varian part number 699006025. These ceramic insulators are used as a spacer between the jet assembly and the cold cap (please see the center photograph above and item #20 in the illustration below).

Agilent Varian VHS-4 Extended Cold Cap, Mexican Hat, Diffusion Vacuum Pump Replacement Parts Agilent Varian Part Number F6898301 These Agilent Varian VHS-4 extended cold caps are OEM Agilent Varian replacement parts for the VHS-4 diffusion vacuum pumps. The extended cold cap is sometimes referred to as a Mexican Hat due to its shape. There are two types of cold caps, standard and extended. The type of cold cap used will influence factors, such as, oil backstreaming and final pumping speed of the diffusion pump. For example, the Extended Cold Cap is an option that fits inside the VHS-4, VHS-6, and VHS-10 pumps in place of the standard cold cap. It stops backstreaming as effectively as an optically dense baffle, yet it retains 80% of the pump’s speed. Residual backstreaming is so low that it cannot be measured by the American Vacuum Society’s standard collection method. For removal installation procedures of cold cap see page 37 of instruction manual PDF below. These extended cold caps are OEM original Agilent Varian replacement parts with part number F6898301, see item #16 on (diagram exploded view & parts illustration) below.

Varian VHS-4, VHS-6 and VHS-250 Old-Style Diffusion Vacuum Pump Bottom Heater Cover These Varian Varian VHS-4, VHS-6 and VHS-250 diffusion vacuum pump replacement bottom heater covers are made of Aluminum and are direct replacements. The heater cover protects the bottom of the diffusion pump and the heater assemble. Other diffusion pump accessories are available on this web site.

Varian VHS-4 Old-Style Diffusion Pump Thermal Overload Switch Aluminum Cover Box These Varian VHS-4 diffusion vacuum pump replacement thermal overload switch covers are made of aluminum. They also include the replacement mounting hardware. The thermal switch is used to protect the diffusion pump from over heating which typically occurs from lack of cooling water.

Agilent Varian VHS-4, Diffusion Pump Baffle Retaining Ring. Agilent Varian PN 699992156 This is the Agilent Varian VHS-4, Air Cooled Diffusion Pump Baffle Retaining Ring. For location of the baffle retaining ring see item #13 on (diagram exploded view & parts illustration) below.

Agilent Varian VHS-6 & VHS-4 Diffusion Pump Replacement Standard Cold Cap. Agilent Varian PN 86488301 These Agilent Varian VHS-6 and VHS-4 diffusion pump standard cold caps are a replacement part that can be installed at the customer's location. There are two types of cold caps, standard and extended. The type of cold cap used will influence factors, such as, oil backstreaming and final pumping speed of the diffusion pump. For example, the Extended Cold Cap is an option that fits inside the VHS-4, VHS-6, and VHS-10 pumps in place of the standard cold cap. It stops backstreaming as effectively as an optically dense baffle, yet it retains 80% of the pump’s speed. Residual backstreaming is so low that it cannot be measured by the American Vacuum Society’s standard collection method. For location of the cold cap please see item #1 on diagram exploded view & parts illustration shown below. For removal installation procedures of cold cap see page 37 of instruction manual PDF below. These standard cold caps are OEM original Agilent Varian replacement parts with part number 86488301.