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Respiratory valve maintenance

Respiratory valve maintenance
Maintenance and maintenance of breathing valve once a month and twice a month in winter.Its method: first open the valve cover slightly, take out the vacuum and pressure valve discs, check the seal between the valve disc and valve disc, the guide rod and guide rod sleeve of the valve disc for oil and dirt. If oil and dirt occur, clean them, then put them back in place, pull them up and down several times to check whether the opening is flexible and reliable.If everything is OK, tighten the bonnet again.During maintenance and maintenance, if abnormal phenomena such as scratches and wear are found on valve discs, they should be replaced immediately or contacted with the supplier so as to be solved in time.
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Leakage is the easiest failure of regulating valve during operation. Some leak at the welding place, and some leak at the sealing place of the stuffing. When leakage occurs at the welding site, repair welding can be done during overhaul; when leakage occurs at the sealing site of the stuffing, new stuffing can be replaced. Sometimes the film of the film actuator is damaged, and the valve stem can't act normally with the air pressure signal, so it needs to be replaced with a new film. In order to avoid the deformation of the valve stem affecting the regulating function, it is better to stand on the pipeline when installing the regulating valve. It is not suitable to install the low-temperature film regulating valve horizontally, and it should form an angle above 150 with the level so that the sealing place of the stuffing is not affected by the liquid. The slanting valve must be lifted. When operating, always pay attention to whether the regulating valve gets stuck. The sealing fille...
Apr 17, 2024
The low temperature valve is installed at normal temperature and works at low temperature, with a wide range of temperature variation. If the design and installation are not appropriate, it is easy to generate thermal stress or deformation. Meanwhile, the operation part of the valve is at normal temperature, and the circulation part is at low temperature. In order to reduce the cold loss, the stem is often made very long, which is easy to produce deformation and get stuck. Low temperature valve often rotates flexibly at normal temperature, but it is tight at low temperature, even can't be opened. The main reasons why the valve gets stuck at low temperature are: 1) during installation, prestress is generated due to unreasonable configuration of the valve and the pipeline; or the cold compensation ability of the pipeline is poor, and the valve position changes at low temperature; or the valve lacks support, and deformation is generated at low temperature; or the valve is not fixed pro...
Dec 12, 2023
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