Gate valve for high-density slurries, and a valve body assembly, and a solids-containing wall lining means therefor
AssigneeITT Manufacturing Enterprises, Inc.
InventorsRichard L. Heinecke, Bruce Knobbe
Life of this patent
Estimating the term…
Abstract
Flexible, plastic, solids-containing liners or panels are disposed in the chamber of the valve body for contacting, interfacing engagement with the gate. Accordingly, the panels and gate substantially fully occupy the chamber, and prevent an entry of slurry solids thereinto. The panels are rubber-backed to insure that the panels are pressed, sealingly, against the flat faces of the gate, and are arranged in parallel with the chamber walls.
Claims6
A gate valve for use with high-density slurries, comprising:
- a valve body including a plurality of walls, said walls defining a chamber therewithin, two of said plurality of walls being disposed opposite to one another, each of said oppositely disposed walls including an aperture;
- a gate reciprocally disposed in said chamber for selectively occluding said apertures;
- reciprocating means coupled to said gate for reciprocating said gate in said chamber;
- liners for engaging opposite sides of said gate and prohibiting entry of slurry solids into said chamber, each of said liners comprising a non-metallic laminate formed by a flexible layer of plastic material disposed against a layer of elastomeric material, the layers of elastomeric material urging said flexible layers of plastic material into sealing engagement with said gate.
A valve body assembly useable in a gate valve for high-density slurries, the valve body assembly comprising:
- a valve body having a plurality of mutually confronting, parallel walls, said walls defining a chamber therewithin, a pair of said walls including apertures;
- and
- liner panels disposed in said chamber, said liner panels parallel with said pair of walls, said liner panels for engaging opposite sides of a valving gate and inhibiting entry of slurry solids into said chamber, said liner panels each comprising a non-metallic laminate formed by a flexible layer of plastic material disposed against a layer of elastomeric material, said layers of elastomeric material urging said flexible layers of plastic material into a fast, sealing engagement with a valving gate.
Dependencies are inferred from the claim text.