Low friction coatings for dynamically engaging load bearing...

Details Low friction coatings for dynamically engaging load bearing... Low friction coatings for dynamically engaging load bearing...

2007-08-14

2007-08-14

Jacyna, J. Casimer (Department: 3754)

Valves and valve actuation

Reciprocating valve

Gate

C251S368000, C977S963000, C137S375000

Reexamination Certificate

active

11214433

ABSTRACT:
A gate valve has a body, the body having a cavity and a flow passage intersecting the cavity. A seat ring is mounted to the body at the intersection of the flow passage and the cavity, the seat ring having an engaging face. A gate in the cavity has an engaging face that slidingly engages the face of the seat ring while being moved between open and closed positions. A polymer coating is on at least one of the faces. The polymer contains a quantity of carbon nanotubes for stiffening.

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