Agilent Varian HS-2 Water Cooled Vacuum Diffusion Pump ASA 2 inch, OD 6 inch, Standard Cold Cap 120V, 450W.Agilent Varian Part Number 82906301 The Agilent Varian HS-2 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This unit, smallest of the HS Series pumps, is well suited for laboratory and research use. The HS2 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-8 Torr. The Agilent Varian HS2 is ideal for applications requiring fast cycling because of its high pumping speed (285 l/s) air combined with high forepressure tolerance no load (0.55 Torr) and full load (0.40 Torr). Backstreaming rate of the unit is 1x10-3 mg/cm2/ min, without the use of any anti-cooled cold cap with only a slight reduction in pumping speed. Inlet Flange 2 inch ASA, 6 inch OD. This Agilent Varian HS-2 Diffusion Pump Includes: Inlet ASA 2" - 6" OD, Outlet .83" 13/16" tube Standard Cold Cap, 285 l/s pumping speed air 120 VAC @ 450 Watt (Designed To Be Used With Santovac 5 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 HS-2 can pump down to pressures of <5x10-8 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 or 240 VAC heater harness. 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 HS-2 diffusion pumps have ASA 2 inch - 6 inch O.D. and contain the 450 Watt heater. This pump is designed for use with Santovac 5 oil, has a pumping speed of 285 l/s air, being compact for easy incorporation into small laboratory instruments, operates on 1-phase 120 VAC and has Agilent Varian part number 82006301. The Agilent Varian HS-2 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 HS-2 Water Cooled Vacuum Diffusion Pump ASA 2 inch, OD 6 inch, Standard Cold Cap 240V, 450W.Agilent Varian Part Number 82906302 The Agilent Varian HS-2 has been designed to fill a special need in applications where high pumping speeds are required and space limitations demand a compact pump. This unit, smallest of the HS Series pumps, is well suited for laboratory and research use. The HS2 pump is a rugged, general-purpose unit with an operating range of 2 x 10-3 to <5 x 10-8 Torr. The Agilent Varian HS2 is ideal for applications requiring fast cycling because of its high pumping speed (285 l/s) air combined with high forepressure tolerance no load (0.55 Torr) and full load (0.40 Torr). Backstreaming rate of the unit is 1x10-3 mg/cm2/ min, without the use of any anti-cooled cold cap with only a slight reduction in pumping speed. Inlet Flange 2 inch ASA, 6 inch OD. This Agilent Varian HS-2 Diffusion Pump Includes: Inlet ASA 2" - 6" OD, Outlet .83" 13/16" tube Standard Cold Cap, 285 l/s pumping speed air 240 VAC @ 450 Watt (Designed To Be Used With Santovac 5 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 HS-2 can pump down to pressures of <5x10-8 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 or 240 VAC heater harness. 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 HS-2 diffusion pumps have ASA 2 inch - 6 inch O.D. and contain the 450 Watt heater. This pump is designed for use with Santovac 5 oil, has a pumping speed of 285 l/s air, being compact for easy incorporation into small laboratory instruments, operates on 1-phase 240 VAC and has Agilent Varian part number 82006302. The Agilent Varian HS-2 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 HS-2 Diffusion Pump, Jet Tube Assembly Agilent Varian Part Number PN F0310301 This is a replacement jet tube assembly. Fits the Agilent Varian HS-2 Diffusion Pump. For location of the jet tube assembly see item #6 on (diagram exploded view & parts illustration) below.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Block. Agilent Varian Part Number 82920001 This is a replacement part heater block (1 per diffusion pump). Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item #3 for heater block location below.

Hex Bolt for attaching ASA Gate Valve to HS-2 Diffusion Pumps. (1each) This is a bolt that attaches and ASA Gate Valve to the HS-2 Varian Diffusion Pump. Size 3/8-16 1 Length, Course Thread, SS (1 each).

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Platen. Agilent Varian Part Number 82918301 This is a replacement part heater platen (1 per diffusion pump). Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item #4 for heater platen location below.

Agilent Varian HS-2 Diffusion Pump, Reflector Agilent Varian Part Number 82917301 This is replacement reflector. Fits the Agilent Varian HS-2 Diffusion Pump.

Agilent Varian HS-2 Diffusion Pump, Replacement Part 5 Qty. O-Ring Set for ASA 2 in. Inlet Flange, butyl 2- 338. Agilent Varian Part Number PN K0377159 This is replacement parts O-Ring Kit for the 2 in. ASA Inlet Flange. (5 per package). Fits the Agilent Varian HS-2 Diffusion Pump. Made of butyl 2-338 rubber. Fits M-2 and HSA-150 pumps also.

Agilent Varian HS-2 Diffusion Pump, Cold Cap Assembly Agilent Varian Part Number PN F0600301 This is a replacement cold cap assembly. Fits the Agilent Varian HS-2 Diffusion Pump. For location of the cold cap see item #8 on (diagram exploded view & parts illustration) below.

Agilent Varian HS-2 Diffusion Pump, Foreline Baffle Agilent Varian Part Number PN 84166301 This is a replacement foreline exhuast baffle. Fits the Agilent Varian HS-2 Diffusion Pump. For location of the forenline exhaust baffle see item #9 on (diagram exploded view & parts illustration) below.

Agilent Varian HS-2 Diffusion Pump, Foreline Baffle Retaining Ring Agilent Varian Part Number PN 660156010 This is a replacement foreline baffle retaining ring. Fits the Agilent Varian HS-2 Diffusion Pump. For location of the foreline baffle retaining ring see item #10 on (diagram exploded view & parts illustration) below.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Assembly, 350W, 120VAC, for use with Santovac 5 oil. Agilent Varian Part Number 647301100 This is a replacement part heater assembly (also known as heater element). 350 Watt, 120 VAC for use with Santovac 5 oil. Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item 1 & 2 for heater assembly location below. For directions on how to replace heater assembly scroll down to AVAILABLE DOWNLOADS and see page 1-3 in the HS-2 Service Manual PDF.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Assembly, 450W, 120 VAC, for use with Santovac 5 oil. Agilent Varian Part Number 647302125 This is a replacement part heater assembly (also known as heater element). 450 Watt, 120 VAC for use with Santovac 5 oil. Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item 1 & 2 for heater assembly location below. For directions on how to replace heater assembly scroll down to AVAILABLE DOWNLOADS and see page 1-3 in the HS-2 Service Manual PDF.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Assembly, 350W, 240 VAC, for use with Santovac 5 oil. Agilent Varian Part Number 647301125 This is a replacement part heater assembly (also known as heater element). 350 Watt, 240 VAC for use with Santovac 5 oil. Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item 1 & 2 for heater assembly location below. For directions on how to replace heater assembly scroll down to AVAILABLE DOWNLOADS and see page 1-3 in the HS-2 Service Manual PDF.

Agilent Varian HS-2 Diffusion Pump, Replacement Part Heater Assembly, 450W, 240 VAC, for use with Santovac 5 oil. Agilent Varian Part Number 647302150 This is a replacement part heater assembly (also known as heater element). 450 Watt, 240 VAC for use with Santovac 5 oil. Fits the Agilent Varian HS-2 Diffusion Pump. See exploded view diagram item 1 & 2 for heater assembly location below. For directions on how to replace heater assembly scroll down to AVAILABLE DOWNLOADS and see page 1-3 in the HS-2 Service Manual PDF.