STANDARD PRESSURE SWITCH 1.5/ 8 PSI BASIC NAME STANDARD PRESSURE SWITCH NATURAL GAS APPLICATION INVOLUNTARY EXPLOSION PROOF DIAPHRAGM SENSOR FIXED DIFFERENTIAL SCALE WITHOUT SCALE EXTERNAL ADJUSTMENT VERTICAL MOUNTING MICROSWITCH CONTACTS 1 SPDT ELECTRICAL CONNECTION NPT FEMALE ELECTRICAL CONNECTION DIAMETER 1/2” REGULATING RANGE 1.5 TO 8 PSI OPERATING TEMPERATURE – 17 TO 60 DEGREES CELSIUS STATIC PRESSURE MAX 50 PSI PROCESS CONNECTION THREAD NPT ASME B1. 20.1 FEMALE CONNECTION TYPE PROCESS CONNECTION DIAMETER 1/8” ADDITIONAL REQUIREMENTS SEE DWYER-1950-P-8-2F COMMERCIAL REFERENCE OBS: – FOR EXPLOSION PROOF CLASSIFIED AREAS.