quick-break mechanism for consistent performance under heavy motor loads

the 3-inch butterfly valve is designed to mount between standard ANSI Class 125/150 flanges

common issues with standard cast or thin-gauge burners in hydronic systems

non-programmable 24V thermostat designed for reliable control over single-stage heating and cooling systems

United Electric J21K-150 Pressure Switch 322056-301 quick-break mechanism for consistent performanceThe United Electric J21K 150 is a rugged, NEMA 4 differential pressure switch engineered for precision monitoring in demanding HVACR and industrial process environments. This unit features an adjustable differential pressure range of 0 to 40 PSID, utilizing a high sensitivity opposing metal bellows design to detect pressure variances between two sources. The SPDT snap action switch output provides versatile control logic, rated for 15A at 125 250 480