United Electric J21K-16020 Pressure Switch 321142-301 This HVAC high limit switch

This HVAC high limit switch (MPN: 56M6201) ensures consistent system balance and protects against short-cycling or thermal overloads

If the reading is below 1

Durable Construction: Built to withstand high-temperature environments for consistent performance in demanding HVAC applications

By utilizing a factory-authorized Lochinvar 100163253 kit

Unlike a basic fixed orifice

United Electric J21K-16020 Pressure Switch 321142-301 This HVAC high limit switchThe United Electric J21K 16020 is a heavy duty differential pressure switch designed for critical monitoring in industrial HVACR systems, chillers, and compressor circuits. Featuring an adjustable setpoint range of 1 to 15 PSID, this unit utilizes an opposing sealed metal bellows design to detect precise pressure deviations between two points. This mechanical accuracy is essential for filter status monitoring and verifying proof of flow in hydronic or