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These valves use PTFE plugs for vacuum applications up to 5 x 10¯7 Torr. Designed with a precision external thread for fine control. Full open position is at 1 1/2 turns. The shaft is non-rotating and a seal is made with a Viton o-ring on a tapered seat. PTFE shaft can tolerate system temperatures of 230ºC and intermittently at 275ºC.

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7148 High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring, 0-2mm Bore Range, 8mm Stem O.D., 5-105 O-Ring Shaft Size
List Price $37.91
7148 High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring, 0-4mm Bore Range, 9mm Stem O.D., 010 O-Ring Shaft Size
List Price $44.35
7148 High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring, 0-8mm Bore Range, 13mm Stem O.D., 110 O-Ring Shaft Size
List Price $56.92
7148 High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring - Manufactured by NDS Technologies, Inc.

High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring, 0-12mm Bore Range, 16mm Stem O.D., 112 O-Ring Shaft Size
List Price $114.97
Product Name N/A High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring
Stopcock Bore Size N/A 2 mm N/A 04 mm N/A 8 mm N/A 0-12 mm
Approximate Stem Outer Diameter N/A 8 mm N/A 9 mm N/A 13 mm N/A 16 mm
Upper O-Ring N/A 5-105 N/A 010 N/A 110 N/A 112
Pkg. Qty. N/A 1