Patent ID: 8631818

Claim:
A valve assembly for use in a fluid reservoir, said valve assembly comprising a body housing, a first parallel link assembly, a second parallel link assembly and a float arm assembly, wherein: said body housing having a valve chamber with an inlet and an outlet, the outlet defining a seat, the body housing having a piston positioned in said valve chamber, said piston having a sealing means for sealing engagement to said seat, said sealing means normally held in closed relationship to said seat via a spring, said sealing means movable into and out of fluid sealing engagement with said seat; said first parallel link assembly comprising a first end and a second end defining a longitudinal axis, said first parallel link assembly first end pivotally connected to said body housing adjacent said outlet at a first pivotal connector, said first parallel link assembly second end pivotally connected to said float arm assembly at a second pivotal connector; said second parallel link assembly comprising a first end and a second end defining a longitudinal axis, said second parallel link assembly first end pivotally connected to said body housing at a third pivotal connector, said second parallel link assembly second end pivotally connected to said float arm assembly at a fourth pivotal connector, and; said float arm assembly positionable within said fluid reservoir to respond to a fluid level therein.