Designed for use on aboveground storage tank piping systems. Allows excess pressure caused by thermal expansion of the liquid to return to the tank.
Standard Features
- Not for use with leak detection systems
- One way flow
- Approximate settings available; 25, 40 or 100 PSI
- Body: Ductile iron
- Cap: Stainless steel
- Spring: Stainless steel
- Ball: Stainless steel