DROP-TIGHT SPOOL AND SLEEVE FOR METERING VALVE

A spool and sleeve assembly for a metering valve comprises a spool body defining a center axis, and a sleeve body having a bore that receives the spool body. The sleeve body includes at least one metering window open to the bore and is moveable between a metering position to control flow through the...

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Bibliographic Details
Main Authors Rickis, Aaron F, Marocchini, Francis P
Format Patent
LanguageEnglish
Published 13.09.2018
Subjects
ACTUATING-FLOATS
AIR INTAKES FOR JET-PROPULSION PLANTS
BLASTING
COCKS
COMBUSTION ENGINES
CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GAS-TURBINE PLANTS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:A spool and sleeve assembly for a metering valve comprises a spool body defining a center axis, and a sleeve body having a bore that receives the spool body. The sleeve body includes at least one metering window open to the bore and is moveable between a metering position to control flow through the metering window and a shutoff position where flow is prevented from exiting an outlet end of the bore. A seal assembly reacts between the spool body and the sleeve body to provide at least a first sealing interface and a second sealing interface axially spaced from the first sealing interface when the spool body is in the shutoff position. A metering valve for a fuel system is also disclosed.
Bibliography:Application Number: US201715451788