BuTech ball check valves prevent reverse flow where leak-tight shutoff is not necessary. Standard materials of construction are 316 stainless steel with 17-4PH poppet for longer life, and 300 series stainless steel spring.
Cracking pressure: 15 PSI (1 bar) approximate
Operating Temperature Range:
- -420° to +1200°F
- (-251° to +648°C)
BuTech o-ring check valves reliably prevent backflow where leak-tight shutoff for liquids or gases is required.
Standard materials of construction are 316 stainless steel with Buna-N o-ring and 300 series stainless steel spring.
Cracking pressure: 15 PSI (1 bar) approximate
Operating Temperature Ranges:
| O-ring Material | Operating Temperature Range | Catalog Suffix |
|---|---|---|
| Buna-N | -65˚ to +250˚F (-54˚ to +121˚C) | ---- |
| Viton | -40˚ to +500˚F (-40˚ to +260˚C) | -VA |
| Teflon | -320˚ to +400˚F (-195˚ to +204˚C) | -TFE |
| Kalrez | -20˚ to +550˚F (-29˚ to +288˚C) | -HT |