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Introduction to Valves Used in the Chemical Industry
Valves play a variety of roles in pipelines and production lines across many different industries. They are used to monitor flow, pressure, stroke, and more. They can also act as protective devices to prevent dangerous problems. Valves can handle gases, fluids, and semi-fluids. Their function is to provide direction and regulation for these elements.
There are various types of valves: butterfly valves, gate valves, globe valves, cryogenic valves, check valves, control valves, etc. Furthermore, their materials may differ. For example, some valves can be made of cast iron, while others may be made of stainless steel.
With an understanding of valves and their various types, the question arises: which of these valves are suitable for the chemical industry?
The chemical industry may involve a variety of processes. Control is established through electrical, hydraulic, pneumatic, and sometimes manual means. The valves used should be able to handle pressure and prevent any leakage. Different valves are known for their different functions.
- Butterfly Valve
For easy opening/closing operations, butterfly valves are ideal. They are easier to install and can be used with a variety of actuators. Furthermore, their maintenance will not impact your expenses because the requirements are minimal.
Butterfly valves are also important because they can slow down the flow of substances. Another advantage is their light weight. They are also very precise. However, if proper sealing is your primary concern, you may need to consider another type of valve, as butterfly valves can have poor sealing performance.
- Ball Valves
Another option is to use chemical ball valves. Chemical ball valves are suitable for applications with low flow rates. They handle gases and steam well. Ball valves are available in single-piece, split-piece, three-piece, welded, and top-mounted types.
They are known for forming good seals and are reliable due to their long lifespan. Ball valves can be easily opened and closed. Chemically resistant ball valves play an important role along with other valves in the chemical industry.
- Gate Valves
Gate valves can be used to completely shut off fluid flow. They can also operate in a fully open position. Therefore, they can be fully open or closed. They can be of parallel and wedge types. By removing obstructions, gate valves provide a path for fluid.
Gate valves ensure that there are no obstructions as substances flow through. Gate valves also offer the advantage of occupying very little space on the pipe axis.
- Gate Valves
Gate valves are ideal for manual operation. They can also be used for automatic operation. They can be used to regulate flow and pressure. Furthermore, they can be used as flow valves that completely close or open. These ball valves have two internal parts. They operate in a linear motion.
- Check Valves
Another type of valve is the chemical check valve. For chemical check valves, preventing backflow can be important. Flow in a check valve is usually unrestricted because there is only one direction of flow. In case the water flow changes direction, the check valve will automatically block to prevent damage to other parts of the system. Therefore, they are crucial for preventing backflow.
- Plug Valves
Plug valves have a plug inside that can be rotated to change the controlled flow rate. They are typically cylindrical or conical. Valves can be used to stop or start the flow of fluids. They can even regulate the flow of gases and fluids at high pressure within a system.
Plug valves are also considered cost-effective. Therefore, they are ideal for buyers with economic concerns. They can be observed in many homes using natural gas.
