Usually used by Nitrogen Leak Testing contractors to connect a pressure activated shut-down switch for the N2 pump during HP leak testing (there will also be a relief valve in the system under test)
OPP VALVES
Definition
Over Pressurisation Protection
OPP Valves means Over Pressurisation Protection. Usually used by Nitrogen Leak Testing contractors to connect a pressure activated shut-down switch for the N2 pump during HP leak testing (there will also be a relief…
✓ Verified term