How Do Ball Valves Work?

Ball valves; Fluid passage is achieved by rotating a sphere at the end of a shaft, with one or more holes in the middle, balanced between two seals, mostly elastomer (may also be metal, depending on need), by 90° on the fluid passage hole axis, and by placing the hole(s) in an open or closed position. cut and open, they do their job. It is preferred that they operate fully open or fully closed. They are not suitable for precise flow control.
 

• Ball Valve Advantages

1. They ensure free and easy passage of fluid.
2. Especially in 2-way valves, the pressure drop is very low. They are comfortable to use.
3. They can be used with actuator.
4. They are also suitable for gaseous fluids.
5. Especially by using elastomer seals, “0 leakage” can be achieved.
6. Flow is possible from both directions of the valve.
    

• Weaknesses:

1. They are heavy due to their structure.
2. As the nominal size increases, the prices become relatively expensive.
3. There is dead volume between the sphere and the internal space of the body.
4. Sudden on-off can create water hammers.
5. Valves with elastomer seals have relatively low operating temperatures, depending on the temperature resistance of the elastomer.

• Fluid Type:

1. Clean, non-solidifying, neutral or aggressive liquid and gaseous fluids

• Flow Direction:

1. With two-way shut-off valves, flow is possible in both directions. In 3- and 4-way valves, the flow direction is indicated.

• Application:

1. Hot and Cold Water Installations, Natural Gas-Oil transportation main lines, Gas distribution Installations, Compressed air installations, Petrochemical Facilities, Machinery Manufacturing, Special Vehicle Manufacturing, Paper Manufacturing, etc.

• Drive Type:

1. With manual, motorized, hydraulic, pneumatic actuators.

• Nominal Dimensions:

1. It can be from DN 8 to DN 1500.