Campbell L100277759 Temperature Pressure Relief Valve 150 Psi

Product Description

The CAMPBELL L100277759 is a temperature and pressure relief valve rated at 150 psi and 1912 MBH, designed to protect water heaters and hydronic boiler systems from dangerous overpressure and overtemperature conditions. When system pressure or temperature exceeds safe operating thresholds, the valve opens automatically to discharge water and relieve the hazard. The inlet and outlet connections are both 3/4 inch female thread, and the probe length is 4.625 inches. Licensed plumbers and HVAC technicians install this valve as a required safety device on water heating equipment.

This relief valve is suited for residential and light commercial water heater and boiler installations where ASME-rated safety devices are required. The 1912 MBH ASME rating covers high-capacity water heating applications. The 3/4 inch female-by-female configuration fits standard tank and heat exchanger tappings. It serves as a direct replacement for Lochinvar OEM part number 100277759 on compatible equipment.

Key Features

• 150 psi pressure rating provides reliable overpressure protection
• 1912 MBH ASME rating supports high-capacity water heating systems
• 3/4 inch female inlet and outlet connections suit standard tank tappings
• 4.625-inch probe length reaches into the water heater tank for accurate temperature sensing
• ASME-rated construction meets code requirements for safety relief on water heaters and boilers

Compatibility

Serves as an OEM-style replacement for Lochinvar part number 100277759 on compatible water heating equipment.

Installation Notes

Temperature and pressure relief valves must be installed by a licensed plumber in accordance with local plumbing codes and ASME standards. Shut off the water supply and allow the system to cool before replacing this valve. Connect a properly sized discharge pipe to the valve outlet, directing it to a safe drain point as required by code. Never cap or plug the discharge outlet, and do not test the valve by lifting the lever unless the system is ready for water discharge.

Technical Specifications

• Pressure Rating: 150 psi
• ASME Rating: 1912 MBH
• Inlet to Outlet Connection: 3/4 inch Female x 3/4 inch Female
• Probe Length: 4.625 inches

Standard Information

• Brand: CAMPBELL
• Manufacturer Part Number: L100277759