High Pressure Check Valves
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Check valve is one flow direction valve, which ensures flow in one direction and prevents backflow. It is also known as a non-return valve and it can be used in a vertical or horizontal pipeline. The material used in the high-pressure check valve is commonly steel or stainless steel, and it depends on the workability and needs in an industrial setting.
It is also available in different sizes such as DN8 to DN50, usually referred to as 1/4” to 2”. The standard working pressure of the high-pressure check valve is 420 bars for size 1/4” to 1”, while pressure reduces to 315 bars from size 1 1/4” to 2” when valve sizes get bigger. |
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What are Check Valves used
1. How does a check valve work?
Check Valve's Arrow
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Check valve comes with a closing position and it operates when a cracking pressure is present, which is the minimum pressure from upstream to push the spring to lift. The spring tension will be determined by the cracking pressure or opening pressure. This mechanical device helps to sustain minimum differential upstream pressure.
To ensure that the valve is installed in the correct direction, an arrow is stamped on the valve body. This arrow shows wherein fluids will flow out of the outlet and flow into the inlet. |
2. What is inside a check valve?
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The common cracking pressure is designed as 0.5 bar or 1 bar. For a valve with higher working pressure, the cracking pressure can be customised upon request and is subject to system flow rate. The fluid system always requires consistent or minimum working pressure, in order to enable the workability of the check valve.
When the pressure goes through the valve above cracking pressure, the check valve will allow the fluids to flow in one direction and the valve will be closed when pressure falls below cracking pressure to prevent reverse flow. Valves are resealed back by spring force when minimum pressure does not meet. |
INTEVA Check Valve
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3. Where is a check valve used?
They are available in threaded end, either National Pipe Thread (NPT) or British Standard Pipe Parallel (BSPP). The high pressure check valve contains a working temperature which ranges up to 150°C, depending on the o-ring material that is used during the valve assembly.
They are available in threaded end, either National Pipe Thread (NPT) or British Standard Pipe Parallel (BSPP). The high pressure check valve contains a working temperature which ranges up to 150°C, depending on the o-ring material that is used during the valve assembly.
MHA Check Valve's Stamping (A point flow to B point)
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High pressure check valve is used in such applications:
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One of the most significant benefits of the high pressure check valve is to prevent water hammering, and it is almost visible or possible in different applications. It protects compressors and pumps from any damage due to water pressure. It causes a low-pressure drop, which can also help to save power or energy.
High pressure check valve reduces or eliminates the chances of sudden valve failure. These valves are flexible, which can facilitate in coping with variable flow conditions. In many applications, it can also be used to reduce downtime. Hence, these benefits can also vary in different applications.
High pressure check valve reduces or eliminates the chances of sudden valve failure. These valves are flexible, which can facilitate in coping with variable flow conditions. In many applications, it can also be used to reduce downtime. Hence, these benefits can also vary in different applications.
4. How do you fix a check valve?
The installation process can be completed by navigating different steps.
The installation process can be completed by navigating different steps.
- First, there is a need to check inside the wall to remove any possible manufacturing material. No foreign material should be inside of the check valve, as this may disrupt its functionality or workability.
- Checking the operation of the valve by pushing it from the seating surface is mandatory. The most important thing is to ensure that it moves freely.
- Inspecting both ends to make sure that there are no burrs or edges is essential, which can create resistance in the sealing process.
- The next step is to install the check valve with the direction of the flow to enhance functionality or workability.
- If there is a horizontal or vertical valve installation, it must carry cover oriented to the top. Flow Control Check Valve enables free flow in a particular direction to restrict the opposite direction flow.
