The Vulcan Hart 00-408279-00022 Pressure Regulator provides controlled and consistent gas flow to help natural gas appliances operate safely and reliably. Designed with a 3/4" connection and rated for 3"–6" WC output at 1/2 PSI, this regulator functions by automatically reducing and stabilizing incoming gas pressure to the proper level required for connected equipment. Its dependable ... https://www.partsfe.co.uk/vulcan-hart-00-408279-00022-pressure-regulator-3-4-nat