Pietro Fiorentini has always been a main player in the combustion industry worldwide and manufactures a complete range of solutions for the combustion industry: gas pressure regulators, gas governors and slam shut valves and more. Direct Acting Regulators Dival 600 Gas Regulator Governor 2 PSIG Standard Governor 5 PSIG Over Pressure Device Governor 10 PSIG Dual Cut Mod. FE Norval Gas Regulator Lever Action Regulators Dival 500 Gas Regulator Pilot Operated Regulators Reval 182