Watts 0163725 40XL-150210 Automatic Reseating Relief Valve

Description:

The Watts 0163725 40XL-150210 Automatic Reseating Relief Valve is a 1 inch temperature and pressure relief valve designed to protect commercial water heaters, hot water storage tanks, and water heating systems from excessive pressure and temperature conditions. Commonly installed in commercial water heaters, hot water storage vessels, boiler support systems, institutional facilities, hotels, hospitals, and industrial hot water distribution systems requiring reliable safety protection. Maintenance personnel, plumbing contractors, OEMs, and facility operators use this valve for safety compliance, replacement projects, preventive maintenance, and new hot water system installations.

Applications:

The Watts 40XL-150210 relief valve is widely used in commercial water heating systems, domestic hot water storage tanks, apartment complexes, hotels, hospitals, nursing homes, schools, universities, restaurants, manufacturing facilities, food processing plants, laundries, institutional buildings, mechanical rooms, and industrial hot water distribution networks. The valve automatically relieves excessive pressure and temperature conditions before they can damage equipment or create hazardous operating situations. It is commonly specified in potable water heating applications where dependable temperature and pressure protection is required to safeguard water heaters, storage tanks, heat exchangers, piping systems, and related infrastructure while maintaining compliance with plumbing and safety regulations.

Technical Specifications:

• Manufacturer Part Number (MPN): 0163725
• Brand: Watts
• Product Type: Automatic Reseating Temperature & Pressure Relief Valve
• Series: 40XL
• Model: 40XL-150210
• Valve Size: 1 in.
• Inlet Connection: 1 in. Female NPT
• Outlet Connection: 1 in. Female NPT
• Pressure Relief Setting: 150 PSI
• Temperature Relief Setting: 210°F (99°C)
• Valve Type: Temperature and Pressure Relief Valve
• Body Material: Bronze
• Thermostat Material: Stainless Steel
• Service Media: Potable Water
• Operation: Automatic Reseating
• Test Lever: Included
• Application: Water Heaters and Hot Water Storage Tanks
• Function: Overpressure and Overtemperature Protection
• Installation: Vertical Mounting Recommended
• Compliance: ASME Rated Temperature and Pressure Relief Service

Common Replacements:

• Watts LF40XL-150210 1" 
• Cash Acme NCLX-5LX 1" 
• Zurn Wilkins TP1100A 1"