Inspection of Safe Operation Regulating valves and related accessories used in potentially explosive atmospheres should be checked for their safe operation, such as tightening of DIN 975 Factory sealing cap, operation of barrier, power supply, etc. In the process medium easy to infiltrate hard debris occasions, be sure to install a permanent filter device. Environmental conditions for transport and storage shall meet the requirements of the product specification. Preventive maintenance Preventive maintenance is planned maintenance before the control valve fails, can be understood as routine maintenance, usually including the following work.

Check the support situation The best position to install the control valve is the valve stem stroke direction and the actuator above the body in a vertical plane.6 Transport and storage control valve Assemble and paint and install the actuators, handwheels, locators and other accessories as required, in order to prevent foreign substances into the control valve, connecting all the air control valve interface must be plugged, connect the flange Install the protective cover, pay attention to the various connection parts, such as the valve positioner intake pipe, the actuator interface state. . . Because the valve is closed, a small piece of rust or welding slag is sufficient to destroy the well-worn seat sealing surface, Moreover, these dirt will also cause valve spool and seat wear, affecting its normal operation. . Control valve dedicated bracket fixed to prevent loosening, to ensure the overall vertical position or horizontal position. Therefore, we must regularly check the gas source and power supply to ensure that the gas source clean, dry, reliable power supply.Control valve repair talk Control valve repair in general there are two: First, preventive maintenance, mainly refers to the regulator valve to ensure the reliable operation, and in the absence of failure to take precautionary measures, including the installation and use of regulating valve in the field A series of preventive measures; the second is the failure of maintenance, that is, in the case of failure of the control valve can not meet the operational requirements of a series of overhaul work, under normal circumstances in the production workshop is completed, under special circumstances may also be carried out directly on the pipeline service.

If the control valve must be installed in a position where the valve stem moves horizontally or the valve stem moves in a certain inclination to the horizontal plane, the actuator should be supported so that the various parts of the control valve are in a natural state. If the long-distance transport, it is best to use a solid wooden shipping. In the fire resistance requirements of the occasion, you can use special refractory coatings, sets of fire bags and other methods, fire bag material containing multi-layer ceramic fiber or glass fiber. to ensure safety of control valves and related accessories run.

Regular Maintenance and Refueling Fillers and lubricators need to be readjusted after a short period of use. 2 faulty maintenance control valve can not operate or can not meet the operational requirements, it means there is a fault, you must repair the fault. In the case of failure can not be affirmed, the general can follow the steps below. Therefore, at all times ensure that stress is avoided or relieved, directing the stress away from the regulating valve. If the control valve and piping easy to accumulate foreign matter, it is necessary to consider the upstream side of the control valve to install a simple filter device