This valve has an extended tip on the PTFE plug that allows accurate valve control for both liquids and gasses. The Viton o-ring is shielded from direct exposure to gasses and liquids by PTFE ring seals.

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Items
7158 High Vacuum Valve, Straight, Low Hold-Up, Extended-Tip with PTFE Plug - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, Low Hold-Up, Extended-Tip with PTFE Plug, 0-2mm Bore Range, 8mm Stem O.D., 5-105 O-Ring Shaft Size
List Price $65.44

7158 High Vacuum Valve, Straight, Low Hold-Up, Extended-Tip with PTFE Plug - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, Low Hold-Up, Extended-Tip with PTFE Plug, 0-4mm Bore Range, 9mm Stem O.D., 010 O-Ring Shaft Size
List Price $83.85
Product Name N/A High Vacuum Valve, Straight, Low Hold-Up, Extended-Tip with PTFE Plug
Stopcock Bore Size N/A 2 mm N/A 04 mm
Approximate Stem Outer Diameter N/A 8 mm N/A 9 mm
Upper O Ring N/A 5-105 N/A 010
Pkg. Qty. N/A 1