After starting the vehicle, on-site overhaul of the valve installation must be performed regularly. The filler needs to be adjusted after a short period of use, and the lubricator needs to be readjusted. In the presence of dust or harsh conditions, a plastic or rubber sleeve needs to be placed around the valve stem to protect the packing box cover and/or the bottom of the membrane chamber. In the case of corrosive gases or droplets of the process medium, special protection of the regulating valve is not required. A common solution to these problems is to wrap the regulator with a plastic bag without affecting the performance of the regulator. It is necessary to be able to inspect and repair when installing the accessories such as the protective sleeve and the companion pipe, because this accessory often has a great influence on the performance of the regulating valve.

Obviously, it is not possible to describe the potential faults in each installation or use. These very common situations provide the basis for developing a better preventative maintenance plan for regulating valves, combined with the experience gained under the conditions of the factory, will help to extend the effective use of the valve during maintenance intervals. life.