GROCO 1/2" Bronze Pipe Nipple Check Valve1 2" Bronze Pipe Nipple Check Valve Features: C83600 cast bronze construction NPT threads 1 2" 2" sizes Not suitable for use with diesel fuel or gasoline Maximum recommended temperature = 176 F (80 C) Sold as a unit of measurement: EAUnique cast bronze pipe joints have efficient internal check valves, which almost limit zero flow, and the required pressure is less than 1 2 PSI SKU: NVN 74247 MPN: PNC 500 UPC: 742985168350