PRESSURE SWITCH 4 TO 100 PSI, SET : 20 PSI, DECREASING, WELLDED 316L SS DIAPHRAGM AND PRESSURE, 1/2 ” NPT (F) CONNECTION, NACE MR-0175 COMPLIANT, SINGLE SWITCH WITH INTERNAL ADJUSTMENT, DUAL CONDUITS WITH BRIND PLUG, CL. I & II DIV. 1 , TYPE 4X, 7 & 9, IP 66, DIE CAST ALUMI BODY, EPOXY POWDER COATED