Accession Number : ADD007017

Title :   Fluid Cutout Valve.

Descriptive Note : Patent,


Personal Author(s) : Otteson,N Stuart

Report Date : 19 Feb 1980

Pagination or Media Count : 8

Abstract : A valve disposed in a fluid system for cutting off the flow of fluid from a source of that fluid to a fluid-using environment upon the occurrence of either an excess or unduly high fluid flow rate or an excess pressure condition experienced in or near the environment. An obturator, disposed in a flow chamber between the valve inlet and outlet, is controlled by two independent assemblies which are responsive to either the flow rate through the valve or the pressure downstream of the valve in the environment. A bias spring, part of a cutout obturator assembly and located in the obturator, maintains the obturator in an open position until an excess flow rate promotes a seating of the obturator. A spindle slidingly connects the obturator to a sensing piston assembly so that when an excess pressure condition is experienced in the environment the obturator is pulled into the seated position causing a cessation of fluid flow through the valve and an isolation of the environment from the fluid source. (Author)

Descriptors :   *Patents, *Cut off valves, *Fluid flow, Flow rate, Fluidics, High pressure, Low pressure

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE