United Electric J21K-140 Pressure Switch Els PW 17895 For technicians performing a furnace

For technicians performing a furnace blower replacement

calibrated for a precise adjustment range of 10" Hg vacuum to 120 psig (Range A)

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making it suitable for both standard residential and commercial voltages

Its robust construction ensures a leak-proof seal

United Electric J21K-140 Pressure Switch Els PW 17895 For technicians performing a furnaceThe 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