Watts Iron Hot Water Pressure Relief Valve, 3/4 in. is designed to provide reliable pressure protection for all types of hot water heating boiler equipment. Constructed with a durable iron body and a forged bronze inlet, this valve ensures long-lasting performance and safety. It features a pressure range of up to 30 psi and can handle up to 550,000 BTU/hr., making it suitable for various heating systems. The valve includes 3/4 I.P.S. female inlet and outlet connections for easy installation and compatibility. This pressure relief valve is an essential component to maintain the safe operation of your hot water heating system. Model Number: 374A