DK-Lok fittings and valves are manufactured to stringent industry standards. With the use of only the highest grade raw mate...rial and 1/1000" tolerance control on each and every part, DK-Lok assures a leak-tight seal in all process, power, and instrumentation applications. Testaments to DK-Lok's quality are their N and NPT stamps awarded by ASME for the use of their products in Nuclear...