Gate valve - pipeline valves, in which the locking or regulating element moves perpendicular to the axis of the flow of the working medium [1]. Valves are a very common type of stop valves. They are widely used in practically any technological and transport pipelines with diameters from 15 to 2000 millimeters in the systems of housing and communal services, gas and water supply, oil pipelines, energy facilities and many others at operating pressures up to 25 MPa and temperatures up to 565 °C.