Self sealing jetting valve
AssigneeZentech, Inc.
InventorsKevin Alan McDoneld, William David Reynolds, Jr., Ramesh Maini
Life of this patent
Estimating the term…
Abstract
An apparatus for use in marine platform jacking is disclosed herein. In one aspect, a jetting valve includes a valve body with a piston assembly disposed therein. The piston assembly is selectively operated to open and close the valve. A biasing member is coupled to the piston assembly. The piston assembly includes a first piston and a second piston. The dual pistons, in cooperation with the biasing member, allow the valve to self-seal thereby preventing entry of a fluid which is external to the valve.
Claims20
A jetting valve, comprising:
- a valve body;
- a piston assembly disposed within the body, the piston assembly comprising:
- a first piston;
- a second piston;
- and
- a shaft coupled to the first piston and the second piston;
- and
- an insert coupled to the valve body having a portion of the shaft therethrough, wherein the insert and the first piston define a first volume and a second volume within the valve body, and wherein the insert comprises a plurality of flow apertures therethrough, the first volume and the second volume in fluid communication through the flow apertures.
A valve cartridge, comprising:
- an end piece having a port therethrough;
- a housing member coupled to the end piece, wherein the housing member further comprises flow apertures disposed between a first surface and a second surface of the housing member;
- a first piston disposed in the port;
- a second piston disposed adjacent the housing member, wherein the second piston selectively allows access to, and blocks access to, the flow apertures;
- and
- a shaft coupled to the first piston and the second piston.
A jetting valve system, comprising:
- a pressure source;
- and
- a valve coupled to the pressure source, the valve comprising:
- a body having a first end and a second end, the first end in fluid communication with the pressure source;
- an insert disposed within the body, wherein the insert comprises flow apertures disposed between a first surface and a second surface of the insert;
- a shaft disposed in the body through the insert;
- a first piston disposed adjacent the insert;
- and
- a second piston disposed in a port in the second end of the body,
- wherein the first piston and the second piston are coupled to the shaft.
A jetting valve, comprising:
- a valve body;
- a piston assembly disposed within the body, the piston assembly comprising:
- a first piston;
- a second piston;
- and
- a shaft coupled to the first piston and the second piston;
- an insert coupled to the valve body having a portion of the shaft therethrough, wherein the insert and the first piston define a first volume and a second volume within the valve body;
- a cap;
- and
- a port disposed within the cap, wherein the second piston is disposed within the port, the second piston selectively allowing fluid communication between the second volume and the port.
A jetting valve system, comprising:
- a pressure source;
- and
- a valve coupled to the pressure source, the valve comprising:
- a body having a first end and a second end, the first end in fluid communication with the pressure source, and wherein the second end of the body comprises a cap;
- an insert disposed within the body;
- a shaft disposed in the body through the insert;
- a first piston disposed adjacent the insert;
- and
- a second piston disposed in a port in the second end of the body, wherein the first piston and the second piston are coupled to the shaft.
Dependencies are inferred from the claim text.