Check valve installation attention

Check valve installation attention

First, the installation of check valve precautions (for reference only):

1. The straight-through lifting check valve should be installed on the horizontal pipe. When the medium stops flowing, the valve flap falls on the valve seat by its own weight to prevent the medium from flowing backward; the direction of the medium inlet and outlet passage of the vertical lifting check valve and the valve The seats are in the same direction and must be mounted on a vertical pipe.

2. Rotary check valves are generally installed on horizontal pipes or on vertical or inclined pipes.

3. When installing the check valve, pay attention to the direction of the medium flow and the direction indicated by the arrow of the check valve.

Second, the performance of the lift check valve and its installation precautions:

1. Do not allow the check valve to bear weight in the pipeline. The large check valve should be independently supported so as not to be affected by the pressure generated by the piping system.

2. Pay attention to the direction of media flow during installation, which should be consistent with the direction of the arrow on the valve body.

3. The lift vertical flap check valve should be installed on the vertical pipe.

4. The lift horizontal flap check valve should be installed on the horizontal pipe.

Third, the performance of the clamp type check valve and its installation precautions:

1. When placing the pipeline, care should be taken to make the direction of passage of the clamp-type check valve consistent with the fluid flow direction;

2. Install in a vertically placed pipe. For horizontally placed pipes, place the wafer check valve vertically;

3. Use a telescopic tube between the wafer check valve and the butterfly valve. Never connect it directly to other valves.

4. Avoid adding pipe joints and obstructions within the operating radius of the valve plate;

5. Do not install a reducer in front of or behind the wafer check valve;

6. When installing the clip-on check valve near the elbow, pay attention to leaving enough space;

7. When the clamp-type check valve is installed at the pump outlet, at least six times the diameter of the valve is flowed out to ensure that the disc is finally subjected to fluid.

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