Combination 9D Backflow Preventer and 1156F Fill Valve for Hot Water Boilers - 1/2"

• Used on boiler feed lines to provide make up waterto the boiler and prevent backflow when supplypressure falls below system pressure
• High capacity fast fill and purge capability
• Maximum pressure: 100 psi
• Maximum temperature: 212°F
• Suffix Options:
• 911 = NPT x NPT Connections
• 911S = Solder x NPT Connections
• B Prefix indicates bronze body construction