Valve which enables easy operation of a closure mechanism at...

Details Valve which enables easy operation of a closure mechanism at... Valve which enables easy operation of a closure mechanism at...

2007-05-15

2007-05-15

Bastianelli, John (Department: 3753)

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

C251S218000, C251S266000, C251S273000, C251S345000

Reexamination Certificate

active

10476168

ABSTRACT:
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. Technical result is achieved due to the fact, that the inventive valve comprises a body provided with inlet and outlet holes, a valve seat, a closure, connected to a drive and seal assemblies, where the body comprises a cylindrical insert and 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 characterized with respect to existing valves in that it ensures the stability of operational characteristics at any pressure of the medium.

REFERENCES:
patent: 1477154 (1923-12-01), Springborn
patent: 1728077 (1929-09-01), Moyer
patent: 1976796 (1934-10-01), Milner
patent: 2105681 (1938-01-01), Armstrong
patent: 4860784 (1989-08-01), Petersen et al.
patent: 5971007 (1999-10-01), Harcourt et al.
patent: 3834173 (1990-04-01), None
patent: 1354239 (1974-05-01), None
patent: 2159857 (2000-11-01), None
patent: 2 163 318 (2001-02-01), None
patent: 93019 (1961-12-01), None

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