United Electric J21K-140 Pressure Switch 318172-701 Restores Pressure Balance: Maintains the

Restores Pressure Balance: Maintains the internal trap seal necessary for the high-pressure switch to stay closed during operation

while the 25 µm internal filter ensures minimal pressure drop with high dirt retention

Diagnostic LED flashes will typically pinpoint internal logic or communication failures

calibration gas cylinders must be purchased separately based on the specific gas type and concentration required for your sensors

United Electric J21K-140 Pressure Switch 318172-701 Restores Pressure Balance: Maintains theThe United Electric J21K 140 Pressure Switch is a high sensitivity differential pressure switch engineered for precise monitoring in demanding HVAC and industrial environments. This unit utilizes opposing brass bellows to accurately detect the pressure drop across filters, coils, or heat exchangers. With an adjustable range of 0 to 6 PSID and a tight deadband of 0. 1 to 0. 4 PSI, it provides the low end resolution required for airflow proving and high