These straight high-vacuum valves are used for vacuum applications up to 5×10^-7 Torr.

• Designed with a precision external thread for fine control
• Can be used as a bleed up to ½ turn
• Full open position is at 1½ turns
• Primary seal is made with a FKM O-ring on a tapered seat
• Non-rotating CTFE shaft provides for improved outgassing at system temperatures up to 200 °C

Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.