Adapter KF-16 to Welch Vacuum Pump Inlet or Outlet (New Style), 1399, 1400, 1400N, Thread Size 3/4-20, Aluminum. 1393F These adapters are KF-16 to Welch vacuum pumps Inlet or Outlet, models 1399, 1400, and 1400N, New Style Pumps. The flange size ISO-KF NW-16 to Welch pump thread size 3/4-20. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant Aluminum. Adapter KF-16 to Welch vacuum pumps (New Style), models 1399, 1400, and 1410 ISO-KF Flange Size: NW-16 Thread Size: 3/4-20 NPSM Common Dimensions: A = 1.12 in., THIS ADAPTER FOR NEW STYLE WELCH VACUUM PUMPS, ie. A New Style Pump has an oil sight glass that is pressed into the body, click on far right picture for example of a new style pump. FOR Welch 1399 pumps with S/N greater than >26461 OR Welch 1400&1400N S/N greater than >18069. Welch Part Number 1393F.

Adapter KF-16 to Welch Vacuum Pump Inlet or Outlet (Old Style), 1399, 1400, 1400N, Thread Size 5/8-18, Stainless Steel.These adapters are KF-16 to Inlet or Outlet Welch vacuum pumps, models 1399, 1400, and 1400N, Old Style Pumps. The flange size ISO-KF NW-16 to Welch pump thread size 5/8-18. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.Adapter KF-16 to Welch vacuum pumps (Old Style), models 1399, 1400, and 1400 Inlet or OutletISO-KF Flange Size: NW-16Thread Size: 5/8-18 NPSMCommon Dimensions: A = 1.77 in., B = 0.450 in.FOR OLD STYLE WELCH VACUUM PUMPS, ie. An Old Style Pump has an oil sight glass held in place with a bolt ring, click on far right picture for example of an old style pump.

Adapter KF-25 to Welch Vacuum Pumps (Old Style), 1380, 1402, 1403, 8806, 8811, 8816, 8821, Thread Size 1-20, Stainless SteelThese adapters are KF-25 to Welch vacuum pumps, models, 1380, 1402, 1403, 8806, 8811, 8816, & 8821, Old Style Pumps. The flange size ISO-KF NW-25 to Welch pump thread size 1-20. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.Adapter KF-25 to Welch vacuum pump (Old Style), models 1380, 1402, 1403, 8806, 8811, 8816, & 8821ISO-KF Flange Size: NW-25Thread Size: 1-20 NPSMCommon Dimensions: A = 2.76 in., B = 0.56 in.FOR OLD STYLE WELCH VACUUM PUMPS, ie. An Old Style Pump has an oil sight glass held in place with a bolt ring, click on far right picture for example of an old style pump.

Adapter KF-25 to Welch Vacuum Pump Inlet or Outlet (New Style), 1376, 1380, 1402, 1405, Thread Size 1-20, Aluminum. 1393G These adapters are KF-25 to Welch vacuum pumps Inlet or Outlet, models 1376, 1380, 1402, 1405, New Style Pumps. The flange size ISO-KF NW-25 to Welch pump thread size 1-20. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant Aluminum. Adapter KF-25 to Welch vacuum pumps (New Style), models 1376, 1380, 1402, 1405, ISO-KF Flange Size: NW-25 Thread Size: 1-20 NPSM Common Dimensions: A = 1.2 in. FOR NEW STYLE WELCH VACUUM PUMPS A New Style Pump has an oil sight glass that is pressed into the body, click on far right picture for example of a new style pump. FOR Welch 1405 pumps with S/N greater than >77703 OR Welch 1380 S/N greater than >2114, OR Welch 1402&1402N S/N greater than >133218, OR Welch 1376&1376N S/N greater than >14594. Welch Part Number 1393G.

Adapter KF-25 to Welch Vacuum Pump Inlets, 8907, 8912, 8917, 8920, 8925, Thread Size 1 1/8-20 thread size, Stainless Steel Welch PN 8907K-05. Fits on 1.125 in. -20 Threaded Inlet Port. These adapters are KF-25 to 1 1/8-20 thread size, Welch vacuum pump Inlets, for direct drive model pumps 8907, 8912, 8917, 8920, 8925 all serial numbers. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of stainless steel.

Adapter KF-40 to Welch Vacuum Pumps, Models (Old Style), 1373, 1376, 8831, Thread Size 1-1/2-12, Stainless SteelThese adapters are KF-25 to Welch vacuum pumps, models, 1380, 1402, 1403, 8806, 8811, 8816, & 8821, Old Style Pumps. The flange size ISO-KF NW-25 to Welch pump thread size 1-20. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.Adapter KF-40 to Welch vacuum pump (Old Style), Models 1373, 1376, & 8831ISO-KF Flange Size: NW-40Thread Size: 1-1/2-12 NPSMCommon Dimensions: A = 2.50 in., B = 1.125 in.FOR OLD STYLE WELCH VACUUM PUMPS, ie. An Old Style Pump has an oil sight glass held in place with a bolt ring, click on far right picture for example of an old style pump.

Adapter KF-40 to Welch Vacuum Pumps (Old Style), 1374, 1397, 8851, Thread Size 1-3/4-20, Stainless SteelThese adapters are KF-25 to Welch vacuum pumps, models, 1374, 1397, & 8851, Old Style Pumps. The flange size ISO-KF NW-40 to Welch pump thread size 1-3/4-20. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant stainless steel.Adapter KF-40 to Welch vacuum pump (Old Style), Models 1374, 1397, & 8851ISO-KF Flange Size: NW-40Thread Size: 1-3/4-20 NPSMCommon Dimensions: A = 2.50 in., B = 1.375 in.FOR OLD STYLE WELCH VACUUM PUMPS, ie. An Old Style Pump has an oil sight glass held in place with a bolt ring, click on far right picture for example of an old style pump.

Adapter KF-40 to Welch Vacuum Pump Inlet or Outlet (New Style), 1374, 1397, Thread Size 1-3/4-20, Aluminum. 1393H These adapters are KF-40 to Welch vacuum pumps Inlet or Outlet, models 1374, 1397, New Style Pumps. The flange size ISO-KF NW-40 to Welch pump thread size 1-3/4 OD with 20 thread turns per inch. They are commonly used to make connections between Welch vacuum pumps and ISO-KF Flanges. The ISO-KF flanges are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges (please see top right figure - click to enlarge). The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive resistant Aluminum. Adapter KF-40 to Welch vacuum pumps (New Style), models 1374, 1397, ISO-KF Flange Size: NW-40 Thread Size: 1-3/4 by 20 NPSM Common Dimensions: A = 1.4 in., FOR NEW STYLE WELCH VACUUM PUMPS A New Style Pump has an oil sight glass that is pressed into the body, click on far right picture for example of a new style pump. FOR Welch 1374 pumps with S/N greater than 73519 OR Welch 1397 S/N greater than 51217. Welch Part Number 1393H.