Patent ID: 6745999
Filing Date: 2004-06-08
Classification: F16K

Abstract:
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.