Patent ID: 9163388
Filing Date: 2015-10-20
Classification: E03B,F16K,Y10T

Abstract:
1. A valve for preventing water hammer, said valve comprising: a speed reduction device for reducing a speed at which said valve may be closed; in which said speed reduction device comprises a torque control device that couples a handle of said valve with a closure mechanism of said valve only so long as a torque threshold on said handle is not exceeded; said handle of said valve is coupled with a hollow shaft; and said closure mechanism of said valve includes a second shaft that extends into said hollow shaft, wherein said torque control device couples said hollow shaft of the handle of said valve to said second shaft so as to rotate said second shaft upon rotation of said handle to operate said valve, wherein said torque control device couples said hollow shaft to said second shaft only so long as a torque threshold on said handle is not exceeded.