The repair Note of ten ball valve

        (1).Must identify the valve on the downstream pipeline pressure has indeed dropped, attempting to disassemble the operation.

    (2).Non-metallic parts should be cleaned immediately removed from the cleaning agent, not a long time soaking.

     (3).Bolts on the flange must be tightened symmetrically, evenly,gradually.

     (4).The cleaning agent should be with the ball in the rubber parts,plastic parts, metal parts and the working medium (such as a gas)are compatible. Working medium for the gas, the gas can be used(GB484-89) to clean metal parts. Pure water or alcohol cleaning with non metal parts.

     (5).Of each valve parts break down can be cleaned using immersion method. Metal non metal still did not break down the left can be used to clean fine clean silk impregnated with cleaning agents (to prevent adhesion of fiber loss on the part) scrub. To remove all the adhesive on the wall of the grease, dirt, rubber product, dustcleaning.

     (6).Ball valve decomposition and re assembly must be careful to prevent damage to parts of the sealing surface, especially non-metallic parts, remove the O - ring, use special tool.

     (7).Need to be cleaned by washing the wall after volatile cleaning agent (cleaning agent can not dip silk rub) for assembly, but not a long time on hold, otherwise it will rust, the dust pollution.

     (8).Before the new parts in the assembly also need clean water.

Lifting Chain

     (9).The use of grease lubrication. Greases are compatible with the ball valve metal materials, rubber parts, plastic parts and the working medium. Working medium for the gas, can be used asspecial grease 221. Seals installed in the groove on the surfacecoated with a thin layer of grease, in the rubber seal is coated with a thin layer of grease, coated with a thin layer of grease on the valve stem sealing surface and the friction surface.

     (10).The assembly should have metal fragments, fiber, fat is not allowed (except the requirement to use) dust and other impurities,foreign matter contamination, adhesion, or stay on the surface or in part into the cavity.

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