Check valve
A check valve is used to control the direction of flow of a working medium (e.g., air, water, gas) in pipeline systems. Its main purpose is to allow the flow to move in one direction, and when it tries to turn in the other direction, it automatically blocks the passage, avoiding the reverse flow.
Construction:
- Housing:
- Made of metal (galvanized steel) or plastic.
- It has a construction that can easily block the passage when the flow is reversed.
- Valve element:
- Usually a cover or disk that opens in the direction of flow and closes when the direction is reversed.
- Hinge or spring:
- Used to stabilize the working element, the aluminum flaps are spring loaded, so the valve can be installed in a vertical position.
Installation:
- Direction of installation:
- The check valve should be mounted so that its arrow or directional marking points in the correct direction of flow.
- Tightness:
- It is important to ensure a tight connection between the valve and the piping system to avoid leakage of the medium.
Operating conditions:
- Pressure and temperature:
- Check valves must be able to withstand the pressure and temperature of the medium in which they are used.
- Corrosion resistance:
- Particularly important to ensure long-lasting operation, especially in applications with aggressive media.
- Regular maintenance:
- Carrying out periodic maintenance to ensure the reliability and efficiency of the valve.
- Safety:
- Compliance with established safety standards and regulations to avoid accidents and emergencies.