Heating Watts Combo Pressure Valves | B911S, 1/2″ Bronze Combination Fill Valve & Backflow Preventer (Sweat X Npt)

Series 911 Combination Fill Valve And Backflow Preventer Consists Of A Model 9D Backflow Preventer And Model 1156F Feed Water Pressure Regulator In One Pre-Assembled Unit. This Valve, For Use In Commercial And Residential Hydronic Heating Systems, Is Designed For Use On Boiler Feed Lines To Provide Make-Up Water To The Boiler And Prevent Backflow When Supply Pressure Fails Below System Pressure.

Features:

• Pre-Assembled For Ease Of Installation
• Easy Service Accessibility
• High Capacity Fill Valve For Quick System Filling And Purging
• All Bronze Body Construction Unionsolder X Npt Connections