Midland Metal 540544 Expanding Pipe Adapter, 1/4 in MPT x 1/4 in FPT, Steel

Pipe Connector, Connection Size 1: 1/4-in, Connection Type 1: Male NPTF, Connection Size 2: 1/4-in, Connection Type 2: Female NPTF, Steel, 1/4-18 x 1/2-14 Thread, Maximum Operating Pressure: 4000 psi, 375 deg F Operating