The straight high-vacuum valve without tip O-ring is for use in vacuum applications up to 5×10-7torr.

• Designed with a precision external thread for fine control
• Valve can be used as a bleed up to ¹/₂ turn
• Full open is at 1¹/₂ turns

Primary seal is made with a FKM O-ring on a tapered seat. Non-rotating PTFE shaft can be used continuously at system temperatures of 230 °C or intermittently at 275 °C. Manufactured from 33 expansions, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.