BWCB jacket insulation is properly installed pump flanges and valves connected
1, BWCB valve gate insulation jacket pipe and flange surfaces should be free of damage, scratches , etc., and keep them clean. In particular the use of the metal gasket ( oval or octagonal cross-section ) , when the slots of the flange should be consistent with the washer to be painted with red lead research in order to ensure good sealing state

2 , vertical and flange -bolt flanged error surface and centerline BWCB jacketed pipe heat pump piping should be within the allowable range of values . After the valves and piping centerline to reach agreement , and then install it.

3, BWCB jacket heat pump connecting the two flanges, first get the flange gasket sealing surface and uniform compaction, thereby ensuring a stress by the same bolt flange connection.

4 , when the fastening bolt, the nut using a wrench to match , when using a hydraulic , pneumatic tightening , up to the specified torque .

5 , the fastening flanges to avoid uneven force should be in accordance with the symmetrical cross -defined sequence of tightening direction .

6, the flange mounting , make sure all the bolts evenly strong nut .

7 , bolts, nuts material must comply . After fastening nut bolt head should be exposed both pitch is appropriate.

8, the fastening bolts and spirals , in order to prevent loosening due to vibration , to use gaskets. In order to avoid the high temperature adhesion between threads , the thread should be coated with a release agent site ( molybdenum disulfide ) during installation.

9 , for valve temperatures above 300 degrees Celsius , the temperature rise in the need for flange bolts, tighten the valve cover bolts, bolts and packing pressure pressure seal cap bolts tightened again.

10 , the low temperature in the valve is in the installation state of the atmospheric temperature . Practical application, when the medium becomes low temperature by , due to the formation temperature, flanges, gaskets , bolts and nuts, etc. contraction occurs , and because these components are not the same material , each of the different linear expansion coefficients , the formation environmental conditions are very likely to leak . This departure from the objective conditions at atmospheric temperature fastening bolts must be used when considering the shrinkage factor of the low-temperature parts of the torque.