Patent ID: 6484749
Filing Date: 2002-11-26
Classification: F16K,F16L,Y10S,Y10T

Abstract:
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.