Introduced of Hard seal ball valve construction

       The key points of the construction

      1).Location, height, must meet the design requirements of the import and export orientation, the connection should be firmly.

      2).All kinds of manual valve installed in the pipe insulation, handle are not down.

      3).The valve must be installed prior to visual inspection, the valve plate should be consistent with the provisions of GB 12220 existing national standards, "universal valve logo". The working pressure greater than 1 MPa and in the main pipe on the role played off valve, the installation should be carried out before the performance test the strength and tight, pass behind the prospective use.Strength test, the test pressure is 1.5 times the nominal pressure,duration of not less than 5min, the valve housing, packing should be no leakage. 

     Tightness test, the test pressure is 1.1 times thenominal pressure; the test pressure shall comply with the requirements of GB 50243 standard in the test duration, the sealing surface of the valve without leakage.

     4).The valve between the flange and pipe flange design by pipinginstalled gasket.

5), belt drive mechanism of the valve, according to product instructions for the installation.

      Chinabase Machinery is a group of manufacturing facilities, offering one-stop solution for mechanical power transmission products in China. We can supply a full-range of power transmission products, such as chains, Engineering Chain,Agricultural Chain,sprockets and plate wheels, Timing Belt Pulleys, gearboxes, motors, Fluid Couplings, gears and racks. Our product range also covers locking assemblies (clamping elements/locking device), taper bushes, QD bushes, bolt-on hubs, torque limiters, shaft collars, motor bases and motor slides, chain detachers, chain guides, universal joint, rod ends and yokes.