Floating ball valve is mainly characterized by the ball without support shaft, the ball is held by the two valve seat which is “floating” state, it is mainly used in pipelines to cut off, distribution and change the direction of media flow.

Floating ball valves are mainly characterized by seat seal design, reliable inverted seal valve stem, fire protection static electricity function, automatic pressure relief and locking device and other structural features.

Structural Features and Usages

1. The opening and closing and the opening extent is usually determined by the position of the wrench. When the wrench is parallel with the pipelines, the valve is at opening position; when vertical with the pipelines, the valve is closed.

2. Design 90° position plate and install lock when necessary, to prevent wrong operation.

3. Seat is designed with spring-loading metal seal, which separates the bottom of the seat from the inner wall of the body and leaves a space. When the ball presses at the seat surface, seat presses the bottom spring to get preload and make up. Therefore, this decreases the damage of seal surface.

4. Use T-type stem to prevent the stem blowing out due to the increase of the pressure of the cavity. Back seat is designed to ensure the packing seal. The valve is widely used in the pipes of food, pharmacy, petroleum, chemical, gas, steel, environment protection, paper to transfer the medium or cut it off.

FEATURES & BENEFITS

1.Fire safe   : API 607

2.Anti static : API 608

3.Face to face: ASME B 16.10

4.Flange ends : ASME B 16.5

5.Inspection and test : API 598 / API 6D