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What Problems Should be Paid Attention to When Installing the Butterfly Valve?

Author: name From: name Modify: Jun. 17, 2020
Apr. 14, 2021

As a Gate Valve Supplier, share it with you.

If you don't pay attention to these problems when installing the butterfly valve, it will cause big troubles in the future use. Today, the butterfly valve manufacturer will tell you what are the precautions.

DIN F4 Gate Valve

DIN F4 Gate Valve

Butterfly valve is nothing more than adjusting flow and pressure. The adjustment of the valve is achieved through the loss of pressure.

The relationship curve between the flow rate and the rotation angle of the butterfly valve is like an integral symbol, which belongs to the parabolic shape. When the angle of rotation is increased under the special circumstances where the opening of the butterfly plate is greater than 60°, the change in flow rate is small. Similarly, there is a similar situation when the disc rotation angle is less than 15°.

In order to achieve a good adjustment effect, the following points should be paid attention to:

A. The loss of the regulating valve accounts for at least 1/3 of the system.

B. In order to obtain a good adjustment effect, the diameter of the valve is often smaller than the diameter of the corresponding pipe.

C. According to experience, the diameter should be determined so that the valve flow rate reaches 5m/s.

When a butterfly valve fails, many people don't know how to deal with it. Today, the butterfly valve manufacturer will tell you how to deal with a butterfly valve failure. Let's get to know the editor together.

The common fault is the leakage of the sealing surface of the butterfly valve. The reason may be dirt, sand or other foreign matter between the sealing surface; the sealing surface or the sealing ring is worn or damaged; the contact interference of the sealing surface is too small or the set screw is loose. The solution of the butterfly valve is to clean the sealing surface; trim the sealing surface or Replace the sealing ring; tighten the set screws evenly.

The main fault is the abnormal operation of the PLC. The reason can be found by checking whether the power supply used is correct and whether the PLC power supply voltage is 24VDC: whether the grounding wire is good; whether the input and output signals are correct; whether the wiring of the input and output terminals is good; whether the PLC itself is faulty to find the cause. The solution is to ensure that the wiring is correct, Good contact; repair or replace faulty electrical components; replace PLC and import the correct control program.

The common fault is the poor pressure holding performance of the butterfly valve hydraulic system. The reason may be dirt mixed in the hydraulic components, or the seals of the hydraulic components are damaged, or the oil leaks at the interfaces of the system oil passages. The solution is to remove the dirt, or replace or repair the sealing components or block the leakage point.

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