B911S-M3, 1/2" Boiler Fill (1156) & Backflow Preventer (9D) Valve Combination, FNPT x Sweat Union
B911S, 1/2" Combo Fill Valve & Backflow Preventer (Sweat)
- Size: 1/2"
- Connections: FNPT x FNPT Union
- Max Operating Temperature: 212°F
- Max. Working Pressure: 100 psi
- Adjustable Range: 10 - 25 psi (factory set at 15 psi)