Midland Metal 63421 Banded Coupling, 4 in FPT x 4 in FPT, Stainless Steel, 150 lb

Banded Coupling, Connection Size 1: 4 in, Connection Type 1: FPT, Connection Size 2: 4 in, Connection Type 2: FPT, 316 Stainless Steel, 4-8 Thread, Pressure Class: 150 lb, For Use With: Air, Water, Oil, Natural Gas, Steam