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This valve has bent side arms to minimize liquid hold-up that occurs with conventional valves. The PTFE shaft seals help protect the Viton o-rings from coming in contact with the system. This design reduces outgassing.

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7154 High Vacuum Valve, Straight, Low Hold-Up, PTFE Plug, without Tip O-Ring - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, Low Hold-Up, PTFE Plug, without Tip O-Ring, 0-4mm Bore Range, 9mm Stem O.D., 010 O-Ring Shaft Size
List Price $54.53
7154 High Vacuum Valve, Straight, Low Hold-Up, PTFE Plug, without Tip O-Ring - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, Low Hold-Up, PTFE Plug, without Tip O-Ring, 0-8mm Bore Range, 13mm Stem O.D., 110 O-Ring Shaft Size
List Price $81.08
Product Name N/A High Vacuum Valve, Straight, Low Hold-Up, PTFE Plug, without Tip O-Ring
Stopcock Bore Size N/A 04 mm N/A 8 mm
Approximate Stem Outer Diameter N/A 9 mm N/A 13 mm
Upper O-Ring N/A 010 N/A 110
Pkg. Qty. N/A 1