Reduced noise valve mechanism

摘要

A valve assembly is provided to control the flow of a fluid therethrough. The valve assembly includes a valve body and a pressure-regulating assembly. The valve body defines an inlet, an outlet, and a flow path extending therebetween. The pressure-regulating assembly includes a longitudinally extending piston tube, a venturi element, and a vent. The piston tube is shiftably mounted in the valve body and at least in part defines an outer chamber. The flow path extends through the piston tube. The venturi element is disposed in the flow path. The vent fluidly interconnects the flow path and the outer chamber such that a pressure drop associated with fluid flow through the venturi element draws fluid from the outer chamber through the vent and into the flow path.

主权项

1. A valve assembly configured to control the flow of a fluid therethrough, said valve assembly comprising:
a valve body defining an inlet, an outlet, and a flow path extending therebetween; and a pressure-regulating assembly including—
a longitudinally extending piston tube shiftably mounted in the valve body,said piston tube at least in part defining an outer chamber,said flow path extending through the piston tube,a venturi element disposed in the flow path, anda vent fluidly interconnecting the flow path and the outer chamber such that a pressure drop associated with fluid flow through the venturi element draws fluid from the outer chamber through the vent and into the flow path,said venturi element being located inside the piston tube,said venturi element comprising a flow restriction located within the piston tube,said venturi element including at least one arm supporting the flow restriction in a spaced relationship from the piston tube.