The quality of the valve installation directly affects its use, so care must be taken to carefully follow the instructions for installation.
Care must be taken during installation and construction. Do not hit the valve made of brittle material.
Before installation, the valve should be inspected, check the specifications and models for damage, especially for the valve stem. Also turn a few times to see if it is skewed, because it is most likely to hit the valve stem during transportation. Also remove debris from the valve.
When the valve is lifted, the rope should not be attached to the handwheel or the valve stem to avoid damage to these parts and should be attached to the flange.
Always clean the piping connected to the valve.
Compressed air can be used to blow off iron oxide chips, mud sand, welding slag and other debris. These debris not only easily scratch the sealing surface of the valve, but also large particles (such as welding slag) can also block the small valve and make it invalid.
When installing the screw valve, the sealing packing (line linen plus lead oil or Teflon raw material belt) should be wrapped on the pipe thread, and should not be put into the valve to avoid the valve memory accumulation and affect the circulation of the medium.
When installing a flanged valve, pay attention to tightening the bolt symmetrically and evenly.
The valve flange and the pipe flange must be parallel and the clearance is reasonable to avoid excessive pressure or even cracking of the valve. Pay particular attention to brittle materials and valves that are not strong enough.
The valve to be welded to the pipe shall be spot welded first, then the closing member shall be fully opened and then welded.
The above briefly introduces the matters that should be paid attention to during the installation and construction, for reference only.
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