VALVE

摘要

The invention relates to pipeline accessories and can be used for working medium flow control in pipelines in particular the pipelines having a high pressure and flow rate of working fluid. The inventive valve comprises a body provided with inlet and outlet holes, a valve seat, a closure connected to a drive and seal assemblies. The body comprises a cylindrical insert. The closure is embodied in the form of a hollow sleeve consisted of two coupled cylindrical parts, the external diameter of the part thereof contacting the body constituting 0.9-1.1 of the internal diameter of the part thereof contacting the insert. Said invention makes it possible to reduce the forces for moving the closure and increase the stable operation of the valve. The inventive valve is characterised with respect to existing valves in that it ensures the stability of operational characteristics at any pressure of the medium.