초록 ▼

A valve sealing device is proposed consisting of two parts, one of which contacts the body of the valve and is made of an expanded graphite compact or an expanded graphite－inorganic binder composite compact, and the other of which contacts the valve member and is made of a carbonaceous material－meta

A valve sealing device is proposed consisting of two parts, one of which contacts the body of the valve and is made of an expanded graphite compact or an expanded graphite－inorganic binder composite compact, and the other of which contacts the valve member and is made of a carbonaceous material－metallic material composite, a carbonaceous material impregnated with an inorganic binder, or a metallic material; a valve using such a sealing device is also proposed.

대표청구항 ▼

A sealing device for a valve comprising a valve body and a valve member, which is adapted to be situated between the valve body and the valve member, comprising: a valve body contact member; and a valve member contact member situated between said valve member and said valve body contact member, said

A sealing device for a valve comprising a valve body and a valve member, which is adapted to be situated between the valve body and the valve member, comprising: a valve body contact member; and a valve member contact member situated between said valve member and said valve body contact member, said valve body contact member including a surface facing and engaging said valve body, said surface in assembly being uniformly compressed against said valve body; wherein the material from which the valve body contact member is fabricated consists of an expanded graphite compact having a bulk density no less than 1.1 gm/cm3; and wherein the material from which the valve member contact member is fabricated consists of a carbonaceous material/metallic material composite in which said metallic material is represented in amounts equal to 10-40% by volume of the entire amount.