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.
Item # |
Product Name |
Stopcock Bore Size |
Approximate Stem Outer Diameter |
Upper O-Ring |
Pkg. Qty. |
List Price |
---|---|---|---|---|---|---|
7148-02 | N/A High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring | N/A 2 mm | N/A 8 mm | N/A 5-105 | N/A 1 | $37.91 |
7148-04 | N/A High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring | N/A 04 mm | N/A 9 mm | N/A 010 | N/A 1 | $44.35 |
7148-06 | N/A High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring | N/A 8 mm | N/A 13 mm | N/A 110 | N/A 1 | $56.92 |
7148-08 | N/A High Vacuum Valve, Straight, PTFE Plug, without Tip O-Ring | N/A 0-12 mm | N/A 16 mm | N/A 112 | N/A 1 | $114.97 |