Patent ID: 6997210

Claim:
A valve arrangement comprising: a valve assembly in fluid communication with a source of fluid pressure and with a first port and a second port to control fluid flow between the source of fluid pressure and the first port and between the source of fluid pressure and the second port, fluid flow being prevented between the first port and the second port; a release valve fluidly connected to the first port and to the second port, the release valve being operable to control flow of fluid from the first port and from the second port, and wherein the valve assembly includes a first valve in fluid communication with the source of fluid pressure and the first port and a second valve in fluid communication with the source of fluid pressure and the second port, and wherein the first valve and the second valve cooperate such that, when fluid is supplied to the first port, fluid flows from the second port and such that, when fluid is supplied to the second port, fluid flows from the first port.