The Daily maintenance and general requirements of pneumatic valve

      Routine maintenance

     1.Body (including the variable speed transmission box) inside and outside, we should first shot blasting sand blasting, seek non-toxic powder electrostatic spraying epoxy resin, thickness of 0.3mm or more. Large electrostatic spraying non-toxic epoxy resin valves have difficulties, should brush, spray similar to non-toxic epoxy paint.

     2.The valve body and valve plate all parts of a comprehensive anti-corrosion requirements, on the one hand immersed in water will not rust, do not produce between two metal electrochemical corrosion; two aspects of smooth surface to reduce drag through the water.

   3.Epoxy resin valve body or anti-corrosion paint health requirements, should the appropriate authority of the organs of the inspection report. Chemical physical properties should meet the relevant requirements.

     Requirement

    1.The specifications and types of pneumatic valves, piping design documents should be consistent with requirements.

    2.The model pneumatic valve should be specified based on the national standard code requirements. If the enterprise standards,should indicate the type of instructions.

     3.Pneumatic valve working pressure ≥ pipeline requirements,work pressure, without affecting the price of the premise, the valve can withstand the working pressure should be greater thanthe actual pipe work pressure; any one pneumatic valve closure conditions should be able to withstand 1.1 times the working pressure valve without leakage; valve open position, the valve body should be able to withstand two times the working pressure valve requirements.

Basic Rubber Tensioner

      4.Pneumatic valve manufacturing standards, we should explain the basis of national standard number, if the enterprise standards,procurement contracts should be attached to business documents. Pneumatic valve standard GB, American Standardand Japanese standard three specifications.

    5.The complete pneumatic valve is described including its size,material, connection mode, and operation mode (where the actionis divided into 1: 2: double acting, single action).

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