ensuring a reliable gas-tight seal. Designed with precision-machined brass, it provides a 1-5/8" UNF inlet and a 3/4" FNPT outlet. A built-in nylon gasket ensures secure sealing, while the 1-3/4" wrench flats allow for easy installation and torque control. Specifications: Inlet: 1-5/8" UNF Outlet: 3/4" FNPT Material: Machined Brass Seal: Integrated nylon gasket Application: LP Gas, Vapor Transfer