Manual Ball Valves

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Big Bear Instruments offers various valve options when proper flow path is important in your application. We proudly offer plastic manual ball valves manufactured by Plast-O-Matic Valves. Sort by series or item type to find the best valve option for your application.

  • Plast-O-Matic MBV Ball Valve

    Plast-o-matic® type MBV valves provide more safety and design features than any other thermoplastic valve. With its mirror-polished ball, perfectly machined sealing surfaces, Trunnion centering design, PTFE thrust bearing and O-ring loaded floating PTFE seats, the True Blue manual ball valve offers smooth turning even in difficult applications. The floating seats automatically compensate for seat wear, and after long term cycling, the carriers can easily be returned to their original position simply by tightening the union nuts. The 2 way valve comes in sizes ranging from ½” up to 4″, and the 3 way version comes in sizes from 2″ to 4″.