초록

Fluid sampling valves having a central bore between an inlet and an outlet with a cylindrical valve stem having a conically-faced head which provides means for fluid sealing within the bore. Such valves are especially useful for sampling critical fluid systems such as aerospace hydraulic systems.

대표청구항 ▼

A valve comprising: (a) a body having one end adapted to be connected to a fluid containing vessel and a sample end adapted to be removably sealed with a cap, wherein said sample end is structured to receive a hollow cylindrical sampling probe and wherein said body has a central bore interconnecting

A valve comprising: (a) a body having one end adapted to be connected to a fluid containing vessel and a sample end adapted to be removably sealed with a cap, wherein said sample end is structured to receive a hollow cylindrical sampling probe and wherein said body has a central bore interconnecting said sample end and said other end, (b) within said central bore, a cylindrical valve stem having proximate to said sample end a conically-faced head and proximate to said other end an enlarged cylindrical head, (c) means for providing a fluid seal within said bore between said body and said conically-faced head comprising a surface substantially perpendicular to the axis of the stem, said surface having a circular bore substantially in alignment with the axis of the stem wherein said conically-faced head will not pass through said bore, (d) means for providing a fluid seal within said bore between said body and said cylindrical head comprising an elastomeric O-ring, (e) at least two elastomeric O-rings located in said bore for providing a fluid seal during insertion of a hollow cylindrical sampling probe into the valve at said sample end, and (f) means for biasing said valve stem to provide sealing contact against said conically-faced head and slideable sealing contact with said cylindrical head.