What is the fault of regulating valve itself

The regulating valve itself is likely to occur the following common faults:

1, adjust valve seat deformation; Excessive leakage caused by improper delivery or improper application of standards. Because there's not enough interaction. Or the surface above the residue accumulation so that the core and seat of the mutual destruction.

2, the valve body and single flow valve, or single flow valve and alarm rod connection is not tight. The reason is that the tightness of the component is unreasonable, or the selected filling material is not standard in the work.

Key common failure components for regulating valves:

1, the valve core: because the valve core has adjusted and disconnect the effect of liquid, is the intercept component of the theme activity, therefore, washing, etching and particulate matter by medium impact is more serious, in a high differential pressure and cavitation erosion condition more easily destroyed, so to check each part of it is destroyed, damaged, etching, whether to repair or conversion.

2, seat: seat welding surface is important to ensure that the valve is closed, it is also more serious by rot and wear. And because of the infiltration of the medium, the inner surface of the fixed seat of the outer thread is often eroded and loose, especially to check this position.

3, valve seat: to check the valve seat and valve core, swing rod connection is not loose, is not caused by excessive deformation, cracks and erosion.

4, filling material: check whether ptfe or other filling material is embrittlement, less oil, mildew, filling material is not tight.

5, gasket and O ring: this kind of wearing parts can not crack damage, embrittlement.