A fully welded ball valve is a type of valve that uses a ball as the sealing element to control the flow of fluids. The ball is welded to the valve body and has a hole in the center that aligns with the flow path when the valve is in the open position.

These types of valves have a ball-shaped disk that is used to control the flow of liquid or gas through a pipeline. The ball is connected to a handle that is used to open or close the valve.

When the ball is in the «on» position, liquid or gas can flow through the pipe. When the ball is in the «off» position, the flow is blocked. Fully welded ball valves are often used in applications where a tight seal is needed, such as on gas or oil pipelines.

1. Fully welded ball valve operation.

A ball valve is a quarter-turn shut-off valve that uses a perforated rotating hollow ball to control the flow of fluids. It is open when the ball hole is aligned with the flow and closed when the hole is perpendicular to the flow.

This ball valve is fully welded and therefore suitable for very aggressive media. It works on the principle of the ball valve. The advantage is that the ball is welded in the body and the medium does not come into contact with the ball. This ball valve is often used in addition to a butterfly valve or a butterfly valve with a ball valve.

2. Advantages

A fully welded ball valve has many advantages over other types of valves. Some of these advantages include:

  1. A fully welded ball valve is much stronger than other types of valves. This is because the entire valve is made from a single piece of metal.
  2. A fully welded ball valve is less likely to leak than other types of valves. This is because there are no joints or seams that could leak.
  3. A fully welded ball valve is much easier to clean than other types of valves. This is because there are no joints or seams to trap dirt and debris.
  4. A fully welded ball valve is much more resistant to corrosion than other types of valves. This is because the entire valve is made from a single piece of metal.
Fully welded ball valve
Fully welded ball valve

3. Disadvantages

The main disadvantage of a fully welded ball valve is the high initial cost. Other disadvantages include the possibility of leaks if the welding is not done correctly and the difficulty of repairing the valve if it becomes damaged.

4. Characteristics of a fully welded ball valve

  1. Easy to install and maintain.
  2. Simple and reliable structure, easy to operate.
  3. Good sealing performance, no leakage under static working condition.
  4. Excellent corrosion resistance and abrasion resistance.
  5. Low operating torque, suitable for large diameter valves.
  6. Wide range of applications.
  7. They are designed for less maintenance and longer life.
  8. They are widely used in power plants, oil and gas, chemical and marine industries.
  9. They are available in sizes from DN1/2” to DN48” (NPS1/2” to NPS2”) and pressures from PN1.0 to PN42.0Mpa (ANSI 150LBS to ANSI 2500LBS).
  10. They are available with manual, gear, pneumatic and electric actuators.
  11. They are available in different materials such as WCB, LCB, CF8, CF8M, CF3, CF3M, WC6, WC9, C5, C12, C12A, F304, F316, F304

5. Main materials

  • Body: carbon steel, SS304, SS316, SS316L
  • Ball: carbon steel, SS304, SS316, SS316L
  • Seat: PTFE, RPTFE, NYLON, DEVLON, Devlon
  • Stem: carbon steel, SS304, SS316, SS316L
  • Bonnet: carbon steel, SS304, SS316, SS316L
  • Gasket: Graphite

6. Operation parameters

  • Size: 1/2″ ~ 48″
  • Pressure: Class 150 ~ 2500
  • Temperature: -60°C ~ +450°C

7. End connection

  • Flanged ends per ANSI B16.5/AWWA C207-07/DIN 2501/BS EN 1092-1/JIS B2212/BS4504
  • Threaded ends to ANSI B2.1/BS 21/DIN 2999/ISO 7/1
  • Butt Welded Ends per ANSI B16.25
  • SW ends per ANSI B16.11

8. Operation

Manual, reducer, pneumatic, electric, hydraulic.

9. Request

The ball valve is widely used in various industries, such as petroleum, chemical, pharmaceutical, food, water treatment, etc.

If you require more information and technical details, you can download our PDF.