Patent ID: 9188375
Filing Date: 2015-11-17
Classification: F16K,F25B,G05D,Y10T

Abstract:
1. A valve arrangement, comprising: a housing defining a second fluid passageway providing fluid communication with the first port; a control element disposed in the housing and positioned by a balance of forces acting thereon, the control element being positionable to one or more throttled positions for controlling fluid flow through the first fluid passageway from the first port to the second port, the control element being positionable to a fully open position to permit relatively unrestricted fluid flow through the first fluid passageway from the second port to the first port; and a check valve disposed in the second fluid passageway for preventing fluid flow through the second fluid passageway from the first port when fluid pressure in the first port is greater than fluid pressure in the second port, and permitting fluid flow through the second fluid passageway to the first port when fluid pressure in the first port is less than the fluid pressure in the second port thereby affecting the balance of forces acting on the control element such that the control element is urged toward the fully open position.