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Note On The Installation Of The Folder Butterfly Valve And Steps
- Jul 17, 2017 -

Wafer-type butterfly valve is one of the most common types of valves in industrial piping. The structure of the clip-on butterfly valve itself is relatively small. Simply put the butterfly valve in the middle of the pipe flange, and use the double-headed bolt through the pipe flange and Clip-type butterfly valve lock, you can control the pipeline fluid medium. The clip-on butterfly valve is particularly suitable for applications where the space is narrow or the distance between the pipes is shorter. When the butterfly valve is in the fully open position, the thickness of the disc is the only resistance when the medium flows through the valve body, so the pressure drop through the valve Small, so it has a good flow control characteristics.

First, the folder-type butterfly valve before installation instructions:

1, the installation began before the operation, with air spray to clear the piping on the outside, piping inside with water clean.

2, carefully check whether the use of the valve with its performance specifications; (temperature, pressure)

3, check the valve channel and sealing surface is debris, and timely removal;

4, out of the box after the valve to be installed in time, do not arbitrarily loosen any fastening screws or nuts on the valve;

5, the folder-type butterfly valve must use a dedicated butterfly valve flange.

6, electric butterfly valve can be installed in any angle of the pipeline, in order to facilitate the maintenance of the proposed do not reverse the installation.

7, butterfly valve flange in the installation must ensure that the flange and seal rubber on the middle, the screw evenly tightened, the sealing surface must be completed; if there is uneven screw tightening will appear rubber bulge stuck butterfly, or top Live butterfly board caused by leakage at the stem.

Second, the folder-type butterfly valve installation steps:

The correct installation of the clip-on butterfly valve depends on the degree of sealing of the butterfly valve, and will not leak and other issues, including the safety of operating conditions, the user should understand the installation process.

1, as shown, the valve placed in the pre-installed between the two flanges, pay attention to the bolt holes to be neatly aligned.

2, the four pairs of bolts and nuts gently inserted into the flange hole, the nut slightly tightened to correct the flatness of the flange surface;

3, the flange using spot welding fixed on the pipeline;

4, the valve out;

5, the flange completely welded fixed on the pipeline;

6, until the welding port cooling and then install the valve. Ensure that the valve has enough space in the flange to prevent the valve is damaged, and to ensure that the valve plate has a certain degree of opening;

7, correct the valve position and tighten the four pairs of bolts, (be careful not to tighten too tight)

8, the valve open to ensure that the valve plate can be free to open and close, and then make the valve plate slightly open;

9, cross the balance of all nuts tighten;

10, once again confirm the valve can be free to open and close, pay attention: to confirm the valve plate did not encounter the pipeline.

The installation of the clip-on butterfly valve must be flat before installation, remember that it is not free to bump, and when it is installed in the installation of the length of the installation, the design of the pipeline in the field, without special permission is not Free to remove the clip-on butterfly valve, which is what we want to know before installation. At the same time we also know that the clip-on butterfly valve can be installed in any position, but the clip-on butterfly valve installation is completed after the need to lay along the butterfly valve, the clip-on butterfly valve to do a bracket, and the bracket once made, It is strictly prohibited to remove the stent.