Watts B1156F Water Pressure Regulator

The Watts B1156F Water Pressure Regulator delivers precise downstream pressure control for residential and commercial hydronic heating systems. With a bronze body and 1/2 inch nominal size, it features threaded x threaded end connections and a compact 3-1/2 inch end-to-end distance for easy installation in tight spaces.

Designed for reliability, this regulator includes a purge lever for quick setup, a stainless steel strainer for debris protection, and a tight seating check valve to prevent backflow. It governs downstream pressure from 10 to 25 PSI, ships with a standard factory setting of 15 PSI, and carries a 100 PSI pressure rating. The unit handles temperatures up to 212°F, making it suitable for diverse heating circuits in both commercial and residential properties. It complies with ISO 9001 standards for quality management.

• Bronze body for durability and reliability
• 1/2" nominal size with threaded x threaded end connections
• Purge lever actuation for fast pressure adjustments
• Stainless steel strainer included
• Tight seating check valve prevents backflow
• Downstream pressure range: 10–25 PSI; factory setting: 15 PSI
• 100 PSI pressure rating; 212°F maximum temperature
• Ideal for commercial and residential hydronic heating systems; ISO 9001 compliant