Midland Metal 63781 Half Coupling, 4 in FPT x 4 in Butt Weld, Stainless Steel, 150 lb

Half Coupling, Connection Size 1: 4 in, Connection Type 1: Female NPT, Connection Size 2: 4 in, Connection Type 2: Socket Weld, 316 Stainless Steel, #4-8 Thread, Pressure Class: 150 lb