Abstract: A shuttle valve 10 includes a valve body 11, a first inlet port 12, a second inlet port 13, an outlet port 14, and a shuttle poppet 15. The inlet ports 12 and 13 may be connected to different sources of fluid pressure, and the shuttle valve 10 connects the higher pressure one of the inlet ports 12, 13 to the outlet port 14 and isolates the lower pressure one of the inlet ports 12, 13 from the outlet port 14. First valve members 26, 46 selectively open and close fluid communication between the first inlet port 12 and the outlet port 14. Second valve members 27, 47 selectively open and close fluid communication between the second inlet port 13 and the outlet port 14. The shuttle valve 10 includes cushioning cavities 50 and 51 and feedback passages 56, 59 and 60 to reduce shock or water hammer in the system.

Abstract: A shuttle valve 10 includes a valve body 11, a first inlet port 12, a second inlet port 13, an outlet port 14, and a shuttle poppet 15. The inlet ports 12 and 13 may be connected to different sources of fluid pressure, and the shuttle valve 10 connects the higher pressure one of the inlet ports 12, 13 to the outlet port 14 and isolates the lower pressure one of the inlet ports 12, 13 from the outlet port 14. First valve members 26, 46 selectively open and close fluid communication between the first inlet port 12 and the outlet port 14. Second valve members 27, 47 selectively open and close fluid communication between the second inlet port 13 and the outlet port 14. The shuttle valve 10 includes cushioning cavities 50 and 51 and feedback passages 56, 59 and 60 to reduce shock or water hammer in the system.