Selection of the different flow paths is made by simply reducing flow through the valve below a predetermined fluid flow threshold and then increasing the flow rate above the threshold.

Tendency of a material to remain deformed after reduction of the deforming stress to a value equal to or less than its yield strength.

Tendency of a material to remain deformed, after reduction of the deforming stress, to a value equal to or less than its yield strength9.

A flow responsive valve for a flow metering system comprising a fluid meter having a minimum measuring flow threshold.

The calcium sulfonate grease composition improves thickener yield and expected high temperature utility as demonstrated by dropping point.

The calcium sulfonate grease composition improves thickener yield and expected high temperature utility as demonstrated by dropping point.

The flow dam brush seal element (30, 30A, 30B) is disposed between and perpendicular to a pair of axially adjacently spaced apart sealing elements (24A, 24B, 24D-H).

The term "yield value" means the force required (minimum shear stress) to overcome the cohesion forces of Van der Waals type and to bring about flow.

The ISO 6259 series specifies a method of determining the tensile properties of thermoplastics pipes, including the following properties: stress at yield, and elongation at break.

The ISO 6259 series specifies a method of determining the tensile properties of thermoplastics pipes, including the following properties: stress at yield, and elongation at break.

The proposed seal further includes a flow dam comprising an axially extending brush seal element (30, 30A, 30B) disposed upon said inner face (22) of each seal carrier segment (20).