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This HVAC pressure sensor supports a wide supply voltage range of 12-40 VDC or 12-35 VAC
verifying the differential pressure with a manometer is recommended before replacing the high-limit safety switch
Please verify your power supply voltage before installation
ensuring consistent electrical ratings
Watts 0383484 Valve 30067439-890 This HVAC pressure sensor supportsThe Watts 0383484 (Series 740) is a high capacity boiler pressure relief valve engineered specifically for commercial and industrial hot water space heating applications. Featuring a 1 1 4 inch NPT female inlet and an expanded 1 1 2 inch NPT female outlet, this ASME Section IV certified valve is designed to handle a massive discharge capacity of 4,285,000 BTU hr at a 75 PSI set pressure. Its iron body construction and stainless steel spring ensure
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