MRK Industries manufactures 3 Way/ 4 Way Ball Valves with Screwed End. MRK Industries is an ISO 9001:2000 certified company. MRK Industries offers different types of stainless steel valves and stainless steel pipe fittings. The 3 Way/ 4 Way Ball Valves with Screwed End are available in two different body styles, a compact standard port and a block style full port. The 3 Way/ 4 Way Ball Valves with Screwed End of Multiport Series feature multidirectional flow combined with shutoff capacity in one valve. These valves are available with NPT threaded and quick clamp end connections. Full port valves are available with NPT threaded, quick clamp and flanged end connections. As a special added feature, full port valves are also available with socket weld or butt weld end connections on sizes 1/4" to 4". Many parts are fully interchangeable between Models.