Model 447 regulator is designed to deliver high gas flows from piping systems that are equipped with station regulator connections. This heavy-duty, high flow, station regulator has back entry access and a "C" (7/8 in. - 14 in.) inlet connection. It features a brass body and bonnet, 2.5 in. dual scale brass gauge, brass T-screw adjustment handle and one-piece encapsulated seat design with internal filter and TeflonĀ® seat.