UE J21K-140 Differential Pressure Switch: 0 to 6 PSID

United Electric J21K Differential Pressure Switch - 1 SPDT Switch Output. Adjustable Range: 0 to 6 PSID. Working Pressure: 30" HgVac to 30 PSI; Proof Pressure: 6 PSI. Deadband: 0.1 to 0.4 PSI. Brass Bellows, 1/4" NPTF Pressure Connections. Gasketed Epoxy-Coated Diecast Aluminum Enclosure. Model formerly designated with factory stock number J21K-140 (9532)