Watts 0274598 Valve 320734-701 This furnace high limit switch

This furnace high limit switch is designed to monitor internal temperatures and interrupt the burner circuit if the heat exchanger exceeds its safe operating ceiling

reducing the need for multiple valve types in a single facility

ensuring long-term compressor protection and optimal thermal exchange

Operating at 230V (208-230V range) with a 1100 RPM nominal speed

Durable Construction: Built to withstand harsh outdoor environments and constant temperature fluctuations

Watts 0274598 Valve 320734-701 This furnace high limit switchThe Watts 0274598 is a high capacity ASME Section IV certified pressure relief valve, engineered specifically for hot water heating and domestic supply boiler systems. Built with a rugged bronze body and a stainless steel spring, this 174A series valve provides critical overpressure protection by reacting to thermal expansion and runaway firing conditions. It features a 3 4 inch FNPT inlet and outlet connection, delivering a substantial steam