Hy-Lok Corp. engages in the manufacture and distribution of valves, fittings and related products. Its products include fittings such as tube, pipe, clean, high pressure, hose fittings and quick connector; valves such as needle, ball and plug, check and relief, piping, manifolds and gauge, double block and bleed, cryogenic, bleed and purge, diaphragm, bellows valves, filters, regulators, and receptacles; modules; ezy-tools such as flanges, tube cutting, tube deburring, tube bending and pre-assembly machines. The company was founded by Moon Young-Hoon on July 28, 1977 and is headquartered in Busan, South Korea.