Mazzei - ISO 978 Series - 25mm Male BSPT Inlet/Outlet Connections (0.50” Barbed/Male NPT Threaded Suction Port Cap)The Mazzei ISO 978 Series venturi injector features 25mm male BSPT inlet and outlet connections with a 0. 50" suction port, engineered for precise chemical and gas injection in water treatment systems. Internal mixing vanes create thousands of microbubbles for superior dissolution and contact efficiency with no moving parts to maintain. SPECIFICATIONS ISO 978 Series Key Specs Model Series ISO 978 Mazzei venturi injector Inlet Outlet 25mm BSPT Male