Features:
- For preventing back flow and keeping prime in water systems
- 1/2 pound spring gives positive seal with no back pressure
- Schedule 40 High-impact PVC type II material
- For use in hot or cold fluid systems up to 140 deg. F
- 150 PSI working pressure at 73 deg. F
- Complies with all applicable ASTM ANSI standards
- Made in the USA by KBI