Hard seal ball Industrial Valves repair note: hard sealing ball valves must be closed, the body remains under pressure fluid before hard seal ball valve repair, remove line pressure and make the valve is in open position before the repair, disconnect the power supply or source maintenance, will be away from the bracket must first find out on the ball valve actuator, the downstream piping have indeed after unloading the pressure, to remove the manipulations of decomposition and assembly again when the sealing surface of the parts, must be careful to prevent injury especially non-metal parts, o-rings of inappropriate use of special tools assembly flange bolts must be symmetrical, step by step, tighten the cleaner should be evenly and ball Industrial Valves in the rubber 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 decomposition down individual 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 and other non-metallic parts shall be immediately removed from the cleaning agent, after cleaning shall not soak for a long time after cleaning after wash wall cleaning agent to volatilize and ( Available not soak cleaner silk cloth to wipe) Are assembled, but shall not be shelved for a long time, or it will rust, dust contamination new parts also need to be cleaned before assembly using grease lubrication. Grease and ball Industrial Valves 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 the rubber seal, valve stem seal face and friction surface coated with a thin layer of grease when assembly should not be allowed to have metal scraps, fiber and 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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flow control valve can be applied in different ways as os & y valve fire protection.