Midland Metal 540566 Expanding Pipe Adapter, 3/8 in MPT x 3/8 in FPT, Steel

Pipe Connector, Connection Size 1: 3/8-in, Connection Type 1: Male NPTF, Connection Size 2: 3/8-in, Connection Type 2: Female NPTF, Steel, 3/8-18 Thread, Maximum Operating Pressure: 3000 psi, 375 deg F Operating