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US 6,484,749 B1Granted
Fire-resistant flange spacer
AssigneeColtec Industrial Products LLC
InventorsMichael Lim, Richard L. Davis
Life of this patent
Estimating the term…
Abstract
A composite flange spacer for articulation between a fluid control assembly and a pair of pipe flanges comprising a fire-resistant, relatively non-compressible, layer sandwiched between a pair of fire-resistant compressible layers.
Claims6
A fluid control assembly comprising:
- a) a valve body having a front surface and a back surface, a flow-way extending through said valve body from said front surface to said back surface, a valve element mounted in said flow-way for movement from a first position closing said flow-way to a second position opening said flow-way, at least one shoulder extending about said flow-way from at least one of said front and back surfaces of said valve body, and a relatively compressible liner lining said flow-way and extending beyond at least one of said front and back surfaces;
- and
- b) at least one flange spacer positioned about said shoulder(s), said spacer(s) extending from at least one of said front surface and back surface of said valve body to a position radially outward of and exterior to an end of said liner extending beyond said front and back surfaces and including a fire-resistant relatively noncompressible layer sandwiched between a pair of fire-resistant compressible layers.
Dependencies are inferred from the claim text.