PORVPower-Operated Relief Valve
PORVPilot Operated Relief Valve (nuclear reactors)
References in periodicals archive ?
PORV C12 Feed water pump control C13 Feed regulating valves and rheostats A (B) C14 Main stm.
The isolation of 2 strains of rotaviruses with a close genetic relatedness of NSP4 gene from Thailand and Slovenia, 2 countries that are located in different continents, may indicate that this novel NSP4 genetic group has already been introduced into PoRVs worldwide.