ADAPTER; TYPE: STRAIGHT UNION; TUBE EXTERNAL DIAMETER: 1/2 IN; THREAD TYPE L1: 1/2 "; MATERIAL: 316 STAINLESS STEEL; DIMENSIONS BY NORM: SAE; PRESSURE R ATING: 315 BAR; STAINLESS MALE CONNECTOR FITTING, 1/2"OD. ON ONE END AND 1/2" NPT ON THE OTHER SIDE