Subject to frequent and intense pressure shocks

Subject to frequent and intense pressure shocks . Hydraulic hose assembly to burst , is generally not due to hydrostatic pressure caused by too much to bear , but with the stress intensity and frequency of shocks related . Construction machinery in operation ,  Hydraulic tube fittings  hose assembly will be repeated within the hydraulic sudden increase or decrease , and thereby constitute a frequent tubing pressure shocks , resulting in damage to seals ministries intensified, blistering and cracking high-pressure hose and pipe loosening the joint leakage . Therefore, in operation, the valve stem can not be pulled too much , must be gentle .