Manufacturer Name: Sensus-Gas Division Product Number: 143-3/4 OEM Part Number: 143-3/4 The Sensus-Gas Division 143-3/4 is a precision-engineered inline regulator valve for controlling gas flow and pressure in HVAC systems. This green valve has a 3/8-inch orifice and a typical 3/4-inch intake size. Its meticulous design maintains gas pressure in the range of 6 to 14 inches of wat... https://www.partshnc.com/143-34-sensus-gas-division-34-std38-orifgreen-6-14-wc