Self sealing jetting valve
AssigneeZentech, Inc.
InventorsKevin Alan MCDONELD, William David REYNOLDS, JR., Ramesh MAINI
Life of this patent
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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.
A valve cartridge, comprising:
- an end piece having a port therethrough;
- a housing member coupled to the end piece;
- a first piston disposed in the port;
- a second piston disposed adjacent the housing member;
- 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;
- 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 valve body, wherein the first piston and the second piston are coupled to the shaft.
Dependencies are inferred from the claim text.