Piping systems have very important components, which are valves. They regulate the liquid, gas, or steam circulation. All valves perform a certain role as per their design. Valves also have symbols in industry diagrams. Such symbols can assist engineers in comprehending the piping plan in an easy manner. In order to select the correct valve, various types of valves and their symbols should be known.
Why are valves important?
Valves permit, prohibit, or control flow securely. They avoid backflow and the system against pressure variation. Pipelines cannot be made to work without valves. This is the reason why industries require the sound valves of a renowned industrial valves manufacturer.
Typical Valves
Industries have a large number of valves. They are all different in structure and intent.
1. Gate Valve
A gate valve is composed of a sliding gate that is either closed or opened to prevent or facilitate the passing of the flow. It is suitable for on-off service-wise. It is not pleasant in flow control.
2. Globe Valve
A disc that moves up and down is fitted to a globe valve. Mainly, it is utilized in terms of throttling and flow control. It seals clean, and it is prevalent in process plants.
3. Ball Valve
A ball valve uses a ball of spherical ball with a hole in the middle. It is opened or closed in a quarter-turn. It is fast, authoritative, and popular.
4. Butterfly Valve
A butterfly valve possesses a rotating disc in the body. It is affordable, lightweight, and it is simple to erect. An engineer’s symbol guide of a butterfly valve can be used to locate the valve in diagrams.
5. Check Valve
The check valve operates in just one direction. It avoids backflow and guards for pumps or compressors.
6. Plug Valve
A plug valve has plug cylindrical or tapered plug. It is an easy and fast system.
7. PRV
An excess pressure is relieved through a pressure relief valve. It prevents accidents and impacts on the system.
Engineering symbols Valve
Valves are standardly represented in piping diagrams. Such symbols assist engineers and other operators to learn about the system by just looking at it.
Gate valve symbol: Single line with a rectangular shape on it.
Globe Valve Symbol: A line having a small circle and a cross sticking within it.
Ball Valve Symbol: A ball shape with two lines on it.
Butterfly Valve Symbol: A line and a rounded end, placed with two wings.
Check Valve Symbol: a line having the triangle pointing in a single direction.
Relief Valve Symbol: The line with a spring or arrow is used.
There is P&ID (Piping and Instrumentation Diagram) usage of symbols. They present a graphic description.
Types of Valves in numerical order
These are some of the primary valves in a nutshell:
- Gate valve
- Globe valve
- Ball valve
- Butterfly valve
- Check valve
- Plug valve
- Pressure Relief Valve
A List of Uses
The valves are applied to:
- Flow on/ off
- Control pressure
- Prevent backflow
- Get rid of extra pressure.
- Manage flow rate
The Selection of the Correct Valve
The decision will rely on:
- System pressure and temperature
- Possible fluid (water, oil, steam, chemicals)
- Requirement to operate fast or control sparse
- Installation space required
- Maintenance requirements
- An established industrial valves manufacturer is able to offer application-specific guidance.
Importance of Valve Symbols
Technical drawings are simple to read because of symbols. They help to avert confusion when projects are big. As an example, the butterfly valve symbol guide guarantees fast identification by design and maintenance. Correct symbols use less time and have fewer mistakes.
Conclusion
Valves are central elements that occur in any piping unit. They assist in controlling many operations, Like flowing, halting, or flowing freely. Various valves, e.g, gate, globe, ball, and butterfly, are used in different functions. They are symbolized in diagrams, making it easy to design and operate the systems by the engineers. Being acquainted with valves and the symbols is crucial for smooth, safe operation. Trust a good industrial valve manufacturer to offer good products. To get familiar with the diagrams, open a butterfly valve symbol guide to have an illustrative example.
