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Harris 447NC-15-1/4 in. LH Pipeline Single Stage Fuel Gas Regulator - 4000569 Factory Demo Machine Harris Model E-43 E-equal orHarris 447NC 15 1 4 in. LH Pipeline Single Stage Fuel Gas Regulator 4000569 Model 447NC Regulator is designed to deliver high gas flows from piping systems that are equipped with standard pipe connection outlets. This heavy duty, high flow, pipeline Fuel Gas Regulator has back entry access and a 1 4 in. NPT 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