Manufacturer Name: Sensus-Gas Division Product Number: 143-IRV-3/4 OEM Part Number: 143-IRV-3/4 The Sensus-Gas Division 143-IRV-3/4 is a precision-engineered inline regulator valve (IRV) for controlling gas flow and pressure in heating, ventilation, and air conditioning systems. This green valve has a 3/4-inch input size and a 3/8-inch orifice. Its meticulous design maintains gas... https://www.partshnc.com/143-irv-34-sensus-gas-division-34-irv38-orifgreen-6-14-wc