Watts Brass Tubular SB1156F 1/2 Boiler Feed Water Regulator

Product Description

The WATTS BRASS TUBULAR SB1156F 1/2 is a bronze-body boiler feed water regulator designed to automatically fill and maintain water pressure in hydronic boiler systems. It connects via a 1/2 inches union solder inlet and a 1/2 inches female pipe thread outlet, making it compatible with standard residential and light commercial piping configurations. The regulator ensures the system receives adequate make-up water and holds a steady operating pressure. A stainless steel strainer is built in to protect the valve disc from fouling, and a tight-seating check feature prevents backflow. Licensed plumbers and HVAC technicians are the primary installers for this type of component.

This regulator is suited for residential and light commercial hydronic heating systems where automatic boiler feed and pressure maintenance are required. The fast fill feature accelerates the initial system fill and speeds purging of air from the piping, reducing commissioning time. A manual purge lever is included, allowing the technician to manually force the valve open for efficient air purging during startup or service. This makes it particularly useful on new installations or after major system repairs where the piping must be fully bled before operation.

Key Features

• Bronze body construction for corrosion resistance in hydronic applications
• Fast fill feature speeds initial system fill and air purging from piping
• Manual purge lever allows technician to force valve open for efficient bleeding
• Stainless steel strainer protects valve disc from fouling and debris
• Tight-seating check feature prevents backflow into the supply line
• 1/2 inches union solder inlet with 1/2 inches female pipe thread outlet for straightforward piping integration

Compatibility

Designed as an OEM-style replacement or new-installation component for residential and light commercial hydronic boiler systems requiring automatic feed water regulation and pressure maintenance.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and depressurize the system before installing or servicing this valve. Ensure all solder connections are fully cooled and the system is flushed before returning it to service. After installation, use the manual purge lever to bleed air from the piping before bringing the boiler up to operating pressure.