United Electric J21K-357 Pressure Switch 321702-401 the protective coating on the

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The Utica-Dunkirk 550001939 Ignitor Kit is a field-critical Direct Spark Ignition (DSI) component engineered specifically for Utica Dunkirk 95M-200 series boilers

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United Electric J21K-357 Pressure Switch 321702-401 the protective coating on theThe United Electric J21K 357 is a dual bellows differential pressure switch engineered for precision monitoring in demanding HVAC and industrial environments. This model features an adjustable set point range of 0 to 70 PSID, providing reliable filter status monitoring and flow verification for chillers, compressors, and pump systems. The J21K 357 is housed in a rugged, epoxy coated aluminum NEMA 4 enclosure, ensuring protection against water and dust