Valve vented redundant stem seal system

A valve includes a stem seal assembly that prevent fluid flow in a first direction and vents in a second direction opposite the first direction. The assembly includes a packing assembly positioned within a valve stem opening of a valve body of the valve to seal a valve stem to the valve body. The pa...

Full description

Saved in:
Bibliographic Details
Main Author HUNTER RICK C
Format Patent
LanguageEnglish
Published 21.04.2015
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
CYLINDERS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
PISTONS
SEALINGS
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
Online AccessGet full text

Cover

More Information
Summary:A valve includes a stem seal assembly that prevent fluid flow in a first direction and vents in a second direction opposite the first direction. The assembly includes a packing assembly positioned within a valve stem opening of a valve body of the valve to seal a valve stem to the valve body. The packing assembly includes a first seal and a second seal preventing passage of fluid from a body cavity of the valve body to an exterior of the valve body along the valve stem while venting fluid from an exterior of the valve body to the body cavity along the valve stem. The packing assembly isolates the first seal and the second seal so that a load applied to the first seal ring is not transferred to the second seal ring.
Bibliography:Application Number: US201113333024