Hard seal ball valve is also there will be a failure, how can we repair? 2. Before repair, remove line pressure and make the valve is in open position 3. Disconnect the power supply or source 4 before maintenance. Before maintenance, actuators and support from 5. Must first find out on the ball valve, the downstream piping have indeed after unloading the pressure, dismantling operations to 6. Decomposition and assembly again when the sealing surface of the parts, must be careful to prevent injury especially non-metal parts, o-rings inappropriate use of special tools. 7. Assembly the flange bolts must be symmetrical, step by step, evenly tighten 8. Cleaning agents should be with the rubber ball Industrial Valves parts, plastic parts, metal parts and working medium ( For example, gas) Are incompatible. Working medium is gas, can use gasoline ( GB484 - 89). Clean the metal parts. Non-metallic parts clean with clean water or alcohol. Break down the single parts can use dip way to clean. Still left did not break down the non-metallic metal parts can be fine clean clean immersion cleaner silk ( In order to avoid fall off fiber adhesion on the parts) Scrub. When cleaning should remove all adhesion on the surface of grease, dirt, plastic product, dust, etc. 10. Non-metallic parts shall be immediately removed from the cleaning agent, after cleaning 11 shall not for a long time. After wash wall detergent volatilization and after cleaning, Available not soak cleaner silk cloth to wipe) Are assembled, but shall not be shelved for a long time, or it will rust, 12 is dust pollution. 13 new parts also need to be cleaned before assembly. Use of grease lubrication. Grease and ball valve should be metal material, rubber parts, plastic parts and working medium are incompatible. Working medium is gas, available for example 221 grease. Besmear in seal installation groove on the surface of a thin layer of grease, apply a thin layer of grease on rubber seal, valve stem seal face and friction surface coated with a thin layer of grease 14. Assembly time should not be allowed to have metal chips, fiber, fat ( With the provisions of the exception) Dust and other impurities, foreign bodies, such as pollution, adhesion, or stay on the parts surface or into the lumen
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