Care must be taken during installation and construction of gate valves. Do not hit the gate valve made of brittle material.

Before installation, the gate valve should be inspected. Check the specifications and models for any potencial damage, especially for the gate valve stem. Also turn a few times to see if it is skewed, because it is most likely to hit the gate valve stem during transportation. Also remove debris from the valve.

When the gate valve is lifted, the rope should not be attached to the handwheel or the gate valve stem to avoid damage to these parts and should be attached to the flange.

Always clean the piping connected to the gate 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 useless.

When installing the screwed end gate valve, the sealing packing (line hemp aluminum oil or Teflon raw material tape) should be wrapped on the pipe thread. Don’t get inside valve to avoid the accumulation, affecting the circulation of the medium.

When installing a flanged gate 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 gate valve, especially for those valves made of material with less strength property.

The gate valve to be welded to the pipe shall be deposit welded first, and then the closing member shall be fully opened and then welded.

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