High pressure needle valve is a kind of high pressure stop valve with high pressure resistance and small diameter.
1. Before installing the high-pressure needle valve, check whether the shape of the needle valve is damaged. If there is any damage, the needle valve will not work properly.
2. Before installation, check whether the valve interface, the inside of the valve and the valve surface are clean. If they are not clean, use an air gun to clean them (Note: if there is scrap iron, be sure to clean the scrap iron and other solid particles, and then clean them, so as not to hurt the inside of the body or even the sealing surface).
3. Install the needle valve on the pipeline or system correctly according to the structure of the needle valve. For needle valves marked at inlet and outlet, use inlet inlet outlet. For the inlet and outlet of needle valve without identification, the principle of low inlet and high connection shall be followed, that is, the low connection is the inlet and the high connection is the outlet. Note that piping and systems must also be clean and filters should be installed in the system to protect system components.
4. After installation, start / close the needle valve 2-3 times and check its performance. Note that when opening or closing the valve, do not use too much force (too much force may cause seal failure). In general, when we close the valve, as long as we can close and bear the system pressure, we can not force the handle to rotate.
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