Valve translated into English

4. 1 The valve should be stored in a dry and well-ventilated room, and it is not allowed to be stacked and shelved repeatedly. The temperature should be kept at 0~35℃ and the relative humidity should be between 50~80%. 4.2 Store the seals on both sides of the valve to prevent foreign objects from entering the cavity and damaging the seals. And contact with oil or other combustible substances should be avoided. 4 .3 The metal working face of the valve shall be cleaned of dirt and coated with antirust agent. 4.4 Before installation, carefully check whether the operation of the pipeline matches the applicable scope specified by this valve, so as to avoid unnecessary losses caused by improper selection. 4.5 This valve is not suitable for vacuum pipeline, and can be installed with bidirectional flow at any position of the pipeline. When the valve is in the horizontal position, it should be fixed on the bracket at the lower end of its installation, and the operation and maintenance should be convenient. 4.6 During installation, the valve cavity should be cleaned to prevent dirt from jamming or foreign objects from damaging the seal. And check whether the connecting bolts of all parts are fastened evenly. During the operation of 4.7 meters, the part in contact with the medium should be checked frequently, and the sealing gasket should be replaced regularly according to the actual use or operation cycle. 4.8 Normally used actuators should be properly maintained. Compressed air entering the cylinder passes through the filter. Observe the oil level of oil mist regularly, and refuel in time when the oil level decreases, so as to ensure that lubricating oil continuously enters the cylinder and lubricate the moving parts of the cylinder well. A drainage system should be established at the beginning of the whole gas supply system, and the moisture in the compressed air should be discharged regularly to ensure that the compressed air is dry. 4.9 If it is used in discontinuous pipelines, the parts in contact with the medium should be cleaned during the period of stopping use, so as to prolong the service life of the valve. 4. The valve after10 overhaul must be tested for leakage according to relevant test regulations before use, and it can be installed and used only after it is qualified. And make maintenance records for investigation.