Watts F383742 1-1/2" Relief Valve 45 PSI 3,903,000 FS Model 740

The Watts F383742 Boiler Pressure Relief Valve is applied to release the excess pressure in heating systems to avoid over-pressurization. It is set at a fixed limit in HVAC systems like boilers with a 45 PSI limit, 1-1/2 inch FNPT connection and 3,903,000 BTUH capacity to offer protection in higher-output applications. It is placed in the pressure relief line and it becomes activated according to the conditions in the system. This operation assists in secure operation, pressure control and stable system operation.