FIELD: machine building.
SUBSTANCE: invention is intended for determination of tightness of gate of pipeline valve without its dismantling with pipeline. Determination of state of reinforcement consists in checking of parameter compliance with requirements of manufacturer technical documentation. For this purpose, from cavity of diagnosed valves, pressure of working medium is relieved, but working medium is not removed, arrangement of locking element on seat passage in it with normalized torque, test substance is fed into its cavity with subsequent holding and control of pressure and temperature during set time, by measured values of pressure and temperature true calculated value of pressure drop (tightness) and compared with standard value of tightness of valves and indication. Method is implemented using device for determining air-tightness of gate of pipeline valves.
EFFECT: invention is aimed at reduction of test cycle valves for tightness.
2 cl, 1 dwg
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