Specifically for the Relief of Vacuum

Extra rugged construction from 316 Stainless with Teflon (PTFE) seat. This valve has found application in demanding environments such as exposure to heavy vibrational loads. The PTFE seat coupled with all stainless guide ensures this valve won't stick even when exposed to challenging conditions. 2" male BSP thread allows a suitable coupling to many standard industrial vessels & ports.

This is a vacuum (only) relief valve ie. it doesn't relieve positive pressure from within the volume being protected.

The new seat design (post Oct/2019) enables the PTFE seat to be replaced with a range of elastomer materials if required.

Cracking relief vacuum at less than -7Kpa