The 1" Watts Series 009 Reduced Pressure Zone Assemblies are Watts "contractor grade" RPZ device. They were in production from 1989-1992. The original 1" 009 was replaced by the 009M2 in 1992. The 009 features a one cover design and is constructed of bronze and use check modules that slide into the body and are held in place with a retainer. The relief valve assembly slides down between the retainer and is directly under the cover. The check modules and relief valve assembly come apart for service. The original 009s parts do not interchange with the "M" models, so please be sure which model you have before ordering. No special tools are required for servicing 009 Series devices. Maintenance ManualSpecification Sheet

Watts 1156F 1/2″ Female NPT Boiler Feed Water Regulator is for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain water pressure in the system at all times.

Watts 1156F 1/2″ Female NPT Boiler Feed Water Regulator is for use in commercial and residential hydronic heating systems to fill the boiler and piping system with water, and to maintain water pressure in the system at all times. It also provides make-up water to the system in the event of system leaks. It consists of an iron and bronze body construction with NPT threaded inlet and outlet connections, a tight seating check valve, purge lever for manual purging, and a stainless steel strainer. Series 1156F has high capacity performance and simplified servicing design. It is suitable for use in the boiler feed lines of hydronic heating systems. Also available with union solder or union threaded connections. Maximum Pressure: 100psi (6.9 bar).