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US 12,560,252 B2Granted
Systems and methods for piston check valves
AssigneeSCV Valve, LLC
InventorSidney Mccarra
Life of this patent
Estimating the term…
Abstract
A piston check valve system includes a body including an upstream end and a downstream end, a bonnet secured to a proximal opening of the body, and a piston secured within the body, the piston being moveable between a closed position in which the piston rests upon a valve seat and an open position in which the piston is spaced away from the valve seat. The piston check valve system also includes a retainer configured to guide and retain the piston and to secure the valve seat within the body.
Claims18
A piston check valve system, comprising:
- a body;
- an upstream flange;
- a downstream flange, the downstream flange being disposed opposite the upstream flange;
- a piston secured within the body between the upstream flange and the downstream flange, the piston including a distal end having an end face, a proximal end, and a central pillar forming a narrowed portion connected to and extending axially between the proximal end and the distal end, and being moveable between a closed position in which the end face blocks a flow of fluid and an open position;
- a removable valve seat disposed within the body;
- and
- a cage surrounding the proximal end of the piston, the cage including a distal bridge configured to surround an outer periphery of the end face of the piston, the cage being configured to secure the valve seat within the body and to guide and retain the piston within the body.
4 more elements
A piston check valve system, comprising:
- a body;
- an upstream flange;
- a downstream flange, the downstream flange being disposed opposite the upstream flange;
- a piston secured within the body between the upstream flange and the downstream flange, the piston being moveable between a closed position in which an end face blocks a flow of fluid and an open position;
- a cage surrounding a proximal end of the piston, the cage including a distal bridge configured to surround an outer periphery of the end face of the piston, the cage being configured to guide and retain the piston within the body;
- and
- a bonnet secured to a proximal opening of the body, wherein the piston includes a rim configured to contact the bonnet when the piston is in the open position.
4 more elements
A piston check valve, comprising:
- a body;
- an upstream opening;
- a downstream opening;
- a piston having a proximal end portion and a distal end portion, the piston being secured within the body between the upstream opening and the downstream opening and being movable from a closed position to an open position in response to fluid pressure from the upstream opening;
- a retainer contacting the proximal end portion of the piston and the distal end portion of the piston;
- and
- a removable valve seat having an opening sized to receive the distal end portion of the piston when the piston is in the closed position, the opening of the removable valve seat formed by an inclined surface configured to form a seal with the distal end portion of the piston.
4 more elements
Dependencies are inferred from the claim text.