| 摘要 |
A pressure balanced valve assembly is provided. In one embodiment, the pressure balanced valve assembly includes a housing assembly having first and second seats. A flow passage formed through the housing assembly includes a first inlet, a second inlet, and an outlet. A piston is slidably mounted in the housing assembly for movement between: (i) a first position wherein the piston contacts the second seat to restrict fluid flow from the second inlet to the outlet, and (ii) a second position wherein the piston contacts the first seat to restrict fluid flow from the first inlet to the outlet. First and second dynamic seals are mounted in the housing assembly. The first and second dynamic seals sealingly engage first and second portions of the piston over areas substantially equivalent to the sealing areas of the second and first seats, respectively.
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