Green Injectors are made BSPT (British Standard Pipe Thread) connections. Mazzei Injectors use the power of the Venturi effect to create suction. Highly resistant to most acids and alkalis Versatile and cost effective High tensile strength Light weight and rigidSpecifications 25 mm Inlet and Outlet 12.70 mm Barb Suction Port 12 mm Nominal Pipe Size Thread Suction Port