How should gate valves be used?

A gate valve is a common general valve, that uses a wide range of applications, mainly used in water conservancy, metallurgy, and other industries, its extensive use performance is recognized by the market, and the following to understand the gate valve should pay attention to how to use.

Here is the content list:

l Precautions for gate valves

l Installation points

Precautions for gate valves

1. Before installing the gate valve, inspect the cavity, sealing surfaces, and other parts of the valve and prevent dirt or sand from sticking to them.

2. The gate valve bolts of each connection part, require uniform tightening.

3. Check the packing parts that require tightening, both to ensure the sealing of the packing and also to ensure that the gate valve opens flexibly.

4. Users in the installation of forged steel gate valves before must proofread the valve model, and connection size and attention to the media flow direction, to ensure consistency with the valve requirements.

5. When installing a forged steel valve, the user must allow the necessary space for the valve's actuator.

6. Forged steel valves require regular maintenance and must not be damaged or crushed to prevent damage to the seals.

Installation points

1. Handwheel, handle, and transmission mechanism are not allowed to be used for lifting, and the collision gate valve is strictly prohibited.

2. The double gate valve should be installed vertically (stem upright, handle up).

3. Gate valve with a bypass valve should be opened before opening the bypass valve (to balance the pressure difference between the import and export and reduce the opening force).

4. Gate valves with transmission mechanisms should be installed according to the product instruction manual.

5. If the gate valve is frequently opened and closed, it should be lubricated at least once a month.

6. Gate valve is only and fully open, fully closed for all types of pipelines or equipment on the media running with, not allowed for throttling.

7. Gate valve with handwheel or handle, the operation shall not be added to the auxiliary bar (if the seal is not tight, the sealing surface or other parts should be checked and repaired). Handwheel, handle clockwise rotation for closed, and vice versa is open. Gate valves with transmission mechanisms should be used by following the provisions of the product instruction manual.

8. Gate valve installation must be checked before the appearance of the valve nameplate should be in line with the current national standard "General Valve Sign" GB 12220 provisions. For working pressure greater than 1.0 MPa and in the main pipe to cut off the role of the valve, before installation should be a strength and tightness test, after passing before use. Tightness test, the test pressure for the nominal pressure of 1.1 times; test pressure in the test duration should be in line with GB 50243 standard requirements, to the valve sealing surface no leakage as qualified.

These are the notes on gate valves. If you want to know more information about related products, please consult us. Our website is https://www.luoomaivalve.com/, welcome your arrival and look forward to cooperating with you.