Precautions before installation of Electric single seated control valve

Precautions before installation of Electric single seated control valve

The installation quality of electric single seat regulating valve directly affects its use, so it must be carefully noted and installed in accordance with the instructions. Care must be taken in installation and construction to avoid hitting valves made of brittle materials.

Before installation, check the valve, check the specification and model, and identify whether there is damage, especially for the valve stem. Also turn a few times to see if it is skewed, because the valve rod is most likely to be skewed during transportation. Also remove the sundries in the valve.

When lifting the valve, the rope shall not be tied to the hand wheel or valve stem to avoid damaging these parts, but shall be tied to the flange.

The pipeline connected to the valve must be cleaned. Compressed air can be used to blow away iron oxide chips, mud and sand, welding slag and other sundries. These sundries are not only easy to scratch the sealing surface of the valve, but also large particle sundries (such as welding slag) can block the small valve and make it invalid.

When installing the electric single seat regulating valve, the sealing packing (hemp plus lead oil or PTFE raw material belt) shall be wrapped on the pipe thread and shall not be put into the valve to avoid accumulation in the valve and affect the medium flow.

When installing the electric single seat regulating valve, pay attention to tighten the bolts symmetrically and evenly. The valve flange and pipe flange must be parallel with reasonable clearance to avoid excessive pressure and even cracking of the valve. Special attention shall be paid to brittle materials and valves with low strength. For the valve to be welded with the pipe, spot welding shall be carried out first, then the closing parts shall be fully opened, and then welded.

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