Regarding internal leakage of the valve, it prevents the filter from being removed and cleaned. How to avoid such issues in the future before purchasing and driving
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Regarding internal leakage of the valve, it prevents the filter from being removed and cleaned. What actions should be taken on the equipment and processes before procurement and operation to avoid such incidents. Could everyone share their experience in this area?
This post was last edited by melamine on 2015-6-9 at 12:02. For critical pumps or those with a high amount of particles in the medium, two filters can be installed in parallel at the inlet, one in use and one as a backup. Additionally, there are many reasons for internal leakage in valves: 1. Quality issues. It is recommended to choose manufacturers with satisfactory quality. Our company usually selects among the three companies – Two Highs and One Continent – the one that offers the lowest price and the shortest delivery time. 2. Usage issues. This is the most crucial. Piping purging must be thorough ； For valves with a diameter of 6\" or less, I require my employees not to use wrenches when turning them, especially for the last turn. To avoid damaging the seal by applying too much force. 3. Foreign objects are stuck on the sealing surface of the valve core. Try turning it on and off a few times to flush out the medium; maybe that will help seal it properly. The premise is to follow the second method, without damaging the sealing surface.
Valve manufacturers generally conduct leakage tests before the products leave the factory! On-site factors account for the majority!
1. Take measures to reduce the amount of mechanical impurities. 2. Install dual valves, with one of them remaining in the open position at all times. 3. Open and close the valves periodically, for short periods of time and in small increments, in order to wash away the mechanical impurities from the sealing surface. 4. When performing maintenance, be careful with the force used to open and close the valves; do not close them completely all at once. Instead, increase the degree of opening quickly just before the valve core reaches its fully closed position, repeating this process several times. The goal is to remove the mechanical impurities from the sealing surface and prevent damage to it during closure
It could be a quality issue with the valve itself, or it could be a problem with the filter. . . .