Wafer type pneumatic butterfly valve_installation instruction_installation steps:
Time: May 19, 2020 01:06:11 Source: Yonglong Valve Reading: zero second
Wafer type pneumatic butterfly valve_installation instruction_installation steps:
The structure of the wafer type pneumatic butterfly valve is relatively small. Just put the butterfly valve in the middle of the flanges at both ends of the pipeline, and use the stud bolt to pass through the pipeline flange and lock the wafer type butterfly valve to control the fluid medium of the pipeline. The wafer butterfly valve is especially suitable for places with narrow space or short distance between pipes. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has good flow control characteristics.
1. Before installation and operation, use air spray to clean the external objects on the piping, and clean the inside of the piping with clean water.
2. Carefully check whether the use of the valve is consistent with its performance specifications; (temperature, pressure)
3. Check whether there are sundries in the valve channel and sealing surface, and remove them in time;
4. After unpacking, the valve shall be installed in time. Do not loosen any fastening screws or nuts on the valve at will;
5. Wafer butterfly valve must use special butterfly valve flange.
6. The electric butterfly valve can be installed on the pipeline at any angle. For the convenience of maintenance, it is recommended not to install it upside down.
7. During the installation of butterfly valve flange, ensure that the flange face is aligned with the sealing rubber, the screws are tightened evenly, and the sealing face must fit completely; If the screws are tightened unevenly, the butterfly plate may be stuck by the rubber bulge, or the butterfly plate may be pressed against, causing leakage at the valve rod.
The correct installation of the clip type butterfly valve is related to the sealing degree of the butterfly valve and whether it will leak, including the safety in working conditions. Users should understand the installation process.
1. Place the valve between the two pre installed flanges, and pay attention to the alignment of bolt holes.
2. Gently insert four pairs of bolts and nuts into the flange hole, and slightly tighten the nuts to correct the flatness of the flange surface.
3. Fix the flange to the pipe by spot welding.
4. Move the valve out.
5. Fully weld the flange to the pipe.
6. Install the valve after the weld junction cools down. Ensure that the valve has enough space in the flange to prevent damage to the valve, and ensure that the valve plate has a certain opening.
7. Correct the valve position and tighten the four pairs of bolts (be careful not to over tighten).
8. Open the valve to ensure that the valve plate can open and close freely, and then open the valve plate slightly.
9. Tighten all nuts evenly and crosswise.
10. Re confirm that the valve can open and close freely. Note: confirm that the valve plate does not touch the pipeline.
The installation of the wafer type pneumatic butterfly valve must first be placed horizontally before installation. Remember not to bump it at will. After it is pulled to the installation length during installation, the wafer type butterfly valve cannot be removed at will without special permission in the design of the on-site pipeline, which is what we should know before installation. At the same time, we also need to know that the wafer butterfly valve can be installed at any position, but after the wafer butterfly valve is installed, it needs to lay the butterfly valve along the line, and make a support for the wafer butterfly valve. Once the support is made, it is strictly prohibited to remove the support when using it.
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