A Trunnion Ball Valve uses a Trunnion, or lower stem to support the ball within the valve body.

The Trunnion seat design is manufactured in one operation that machines the metal seat holder / retainer to which the seat insert is added. In some configurations the seat insert is then locked into place by rolling the seat lip into the insert groove, resulting in an extremely reliable seal.

Relia trunnion ball valves are built for durability and low-maintenance. are designed for reliability and high-performance, and are an excellent choice for shutoff applications in the power, oil & gas and petrochemical industries.

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