United Electric J21K-S150B Pressure Switch Refrigerant airtight connection to the heat

airtight connection to the heat exchanger access door

corrosion-resistant alloys

making it suitable for large residential and light commercial 14-inch bypass runs

Durable Construction: Nickel-plated sensing bulb and capillary resist corrosion and high heat in commercial kitchens

diaphragm-actuated valve is engineered to reduce high upstream inlet pressure to a constant

United Electric J21K-S150B Pressure Switch Refrigerant airtight connection to the heatThe United Electric J21K S150B Pressure Switch is an industrial grade differential control designed for precision monitoring in HVAC R and process systems. Engineered with welded 316L stainless steel bellows, this model provides high sensitivity detection for filter status monitoring, proof of flow, and chiller protection. The J21K S150B features a field adjustable range of 0 to 40 PSID, allowing technicians to fine tune setpoints via an internal red