Pneumatic valve hydraulic test safety operation procedures

Into the hydrostatic test of the pneumatic valve, no cracks, porosity, dent, pneumatic valve stem regulation is not allowed to have stuck phenomenon. Use and spare bolts and nuts must pass a strength calculation and hit the mark, to prevent confusion. Test of the workpiece must be fastened on the device, no free place. Experiment with rubber band, or other elastic gasket, cannot have bump, layered, loosening or lose elasticity. Carried out in accordance with the product process planning pressure test, the booster to the pressure of work above, must not be allowed to screw nut, clamping device and components of the rest parts. End cover must conform to the requirement of the technical documentation and upon passing the test, can use, when test pressure exceeds % calculated pressure are not allowed to be used.