PILOT-OPERATED CHECK VALVES
- 100% Factory Tested
- Made in the USA
- Buna 'N' & Teflon Seals
- 4:1 Pilot Ratio, meaning that at least 25% of the pressure held at (1) is requred at (3) to open the valve
- Size '8' valves are referred to as 'PP' or 'Power Series'
- Size '10' valves are referred to as 'DF' or 'Delta Series'