Pressure protection valve
AssigneeParker-Hannifin Corporation
InventorsRobert Knepple, Andrew Bishop, Paxton Augustine, Leonardi J. Jabcon, Jr.
Life of this patent
Estimating the term…
Abstract
A pressure protection valve (10) is provided featuring a swivelable output port fitting (40) and a valve element (60) having a portion (64) configured to redirect a portion of the fluid flow toward the fixed seat (30) upon initial opening of the valve (10). The valve element (60) is in a portion of the fitting that is inserted into a pressure container so as to be protected from external forces. The valve (10) may also include a vent cover (110) sealing the vent port (80), the vent cover (110) movable to vent pressure through the vent port (80) when the valve (10) opens and to relieve pressure through the vent port (80) when the valve (10) closes.
Claims20
A valve comprising:
- a fitting housing having an inlet and an outlet fluidly connected by a fluid flow path;
- an output port fitting swivelably attached to the outlet of the fitting;
- a seat member fixedly positioned in the inlet of the fitting;
- a sleeve having a sealing lip and a radially outwardly opening groove and being slidable within the fitting housing between a first open position in which the sealing lip is spaced from the seat member and a second closed position in which the sealing lip seals against the seat member;
- and
- a seal disposed in the radian outwardly opening groove to seal the sleeve to the fitting housing,
- wherein the sleeve has an axially opening annular groove formed in a leading face of the sleeve so that fluid which flows between the seat member and the sealing lip on the sleeve when the valve is initially opened is directed into the groove which then redirects a portion of that fluid toward the seat member,
- wherein the leading face of the sleeve is adjacent the seat member and the annular groove is formed in the leading face of the sleeve radially inward from the sealing lip.
A valve comprising:
- a fitting housing having an outlet fluidly connected by a fluid flow path;
- an output port fitting attached to the outlet of the fitting;
- a seat member secured in the inlet of the fitting;
- a sleeve disposed in and being slideable within the fitting housing, the sleeve having a first end, a second end, a sealing lip at the first end, a radially outwardly opening groove, and an axially opening annular groove formed in a leading face of the sleeve adjacent the seat member radially inward from the sealing lip;
- and a seal disposed in the radially outwardly opening groove to seal the sleeve to the fitting housing, whereby fluid flows between the seat member and the sealing lip when the valve is initially opened is directed into the annular groove, which then redirects a portion of that fluid toward the seat member.
A valve comprising:
- a fitting housing having an inlet and an outlet fluidly connected by a fluid flow path;
- an output port fitting attached to the outlet of the fitting;
- a seat member secured in the inlet of the fitting;
- and a sleeve having an axis, a sealing lip, a radially outwardly opening groove, and an axially opening annular groove formed in a leading face of the sleeve adjacent the seat member opening towards the seat member, and a seal disposed in the radially outwardly opening groove to seal the sleeve to the fitting housing, wherein the sleeve is movable within the fitting housing between a first open position in which the sealing lip is spaced from the seat member and a second closed position in which the sealing lip seals against a radially, outwardly facing surface of the seat member, and whereby fluid that flows between the seat member and the sealing lip when the valve is initially opened is directed into the annular groove, which then redirects a portion of that fluid toward the seat member.
Dependencies are inferred from the claim text.