Honeywell
Part number: 20-734
Pack size: EA
Circuit: N/C N/O 
PSI: 25/50 PSI Adjust - Set At 35 PSI 
Pins:
Thread: 1/8 - 27 NPT 
Insulated:
Manufacturer: Honeywell 

Part # 20-734

Burst pressure:  1250 PSI