UE J21K-S150B Differential Pressure Switch: 0 to 40 PSID

United Electric J21K Differential Pressure Switch - 1 SPDT Switch Output. Adjustable Range: 0 to 40 PSID. Working Pressure: 30" HgVac to 180 PSI; Proof Pressure: 40 PSI. Deadband: 0.3 to 0.7 PSI. Welded 316L Stainless Steel Bellows, 1/2" NPTF Pressure Connections. Gasketed Epoxy-Coated Diecast Aluminum Enclosure. Model formerly designated with factory stock number J21K-S150B (9519)