Feature of Trunnion Mounted Ball valve

Goole Trunnion Mounted Ball valves are manufactured to API 6D Specification and tested to API 598/ API 607. The construction is Side Entry with 2 pieces design, Side entry with 3 Pieces Design, Top Entry or Full Welded Ball Valve. The followings are some of the major design features of our GOOLE Trunnion Mounted Ball Valves.

Trunnion Ball Valve Feature 1: Fire Safe Design

   All sizes and pressure valves have been successfully fire-safe tested according to the relevant API and BS specifications. Test certifications aare available on request.

Trunnion Ball Valve Feature 2: Antistatic

   Electrical continuity of ball valve components, prevent statics build-up.

Trunnion Ball Valve Feature 3: Double Block & Bleed

   Trunnion mounted ball valve generally use the seat sealing before ball construction. The two seats in the trunnion mounted ball valve can close the inlet and outlet respectively to implement the double block. When the valve is closed, even the both ends have pressure, the cavity and the bore can be blocked. The rest medium in the cavity can be discharged all to the drain plug.

Trunnion Ball Valve Feature 4: Automatically discharging pressure on body

   When the medium in the cavity has physical or chemical changes with the rising of temperature and results in the abnormal increase of cavity pressure. The construction design can push the seat depending on itself to release the pressure to make sure the safety of  the valve.

Trunnion Ball Valve Feature 5: Optional: Double Piston effect seat

   There is first barrier sealing and second barrier sealing for this design.

Trunnion Ball Valve Feature 6: Full Bore

    Valves have the same bore as the inner bore of the pipeline, convenient for PIG Service.

Trunnion Ball Valve Feature 7:  Emergency sealing and lubricating sealant.

   When the seat sealing ring is damaged by accident, we can inject the sealant via sealant emergency injection fittings to avoid the leakage by seat sealing ring.

Trunnion Ball Valve Feature 8: The design of the top flange for actuator

   The top flange with yoke and mounting plate is convenient to install the gear, electric and pneumatic actuator.

Trunniono Ball Valve Feature 9:  Extended stem for underground

   For the valves to be installed underground, the stem can be extended including all the relevant pipes, drain, vent and emergency sealant lines to be attached to the stem extension at the need of the installation or operation.

Trunnion Ball Valve Feature 10: Extended Stem for Low temperature

   To avoid the valves' packing to be damaged in the low temperature and resulted in the bad sealing, the stem can be extended at the demands.