High-Temperature Durability: The silicon carbide material is resistant to oxidation and maintains stable electrical properties over its service life

High-Temperature Rating: Maintains structural integrity in industrial fluid systems starting at -20°F and ranging into high-heat process environments

Key Benefits Precise Safety Calibration: Fixed 135°F cutout is factory-set to prevent overheating and potential heat exchanger stress

providing technicians with a front-entry point for commissioning via a laptop and HVAC PRO software without removing the sensor from the wall

High Close-Off Performance: Engineered for 400 psi static pressure

Watts 0382570 Valve 30067439-890 High-Temperature Durability: The silicon carbideThe Watts 0382570 Valve (Model 740 1 30) is a high capacity boiler pressure relief valve engineered specifically for technical professionals managing large scale hot water space heating systems. Built with a rugged iron body, this ASME Section IV certified valve delivers a massive discharge capacity of 1,300,000 BTU hr at a 30 PSI set point. Contractors and facility managers frequently specify the Watts 740 series because of the unique design where