Knife gate valve having elastomeric gate and chest seals

Details Knife gate valve having elastomeric gate and chest seals Knife gate valve having elastomeric gate and chest seals

2006-06-13

2006-06-13

Look, Edward K. (Department: 3751)

Valves and valve actuation

Reciprocating valve

Gate

C251S214000, C277S646000

Reexamination Certificate

active

07059586

ABSTRACT:
A gate seal for a knife gate valve comprising a sealing surface lining the gate channel and an integral gasket for compression between valve body halves, a chest seal for a knife gate valve comprising a body having an expandable sealing surface and one or more injection chambers adapted to receive an injectable packing, each chamber having a cross-sectional area that is completely surrounded by the body member, and/or a knife gate valve comprising one or both such seals. The chest seal body may comprise a knife gate slot that is peripherally surrounded by the body. The gate seal and the chest seal may comprise a single integral elastomeric member or separate components.

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