Patent ID: 7694692
Filing Date: 2010-04-13
Classification: F16K,Y10T

Abstract:
1. A non-magnetic latching servo actuated valve comprising: a valve end cap having a valve seat, an inlet, an outlet and a valve end cap passage that extends from the inlet through the valve seat to the outlet; a valve stem cap adapted to engage the valve seat to close the valve end cap passage that extends between the inlet and the outlet and the valve stem cap having a hollow portion and having a valve stem cap passage that extends through the valve stem cap, and a valve stem having a radial passage, the valve stem joined to the valve stem cap, an axial passage between the valve stem and the valve end cap; and a shuttle assembly including a conically shaped shell component having an o-ring seal positioned within a recess, the shuttle assembly positioned inside the hollow portion of the valve stem cap that is in a normally closed position such that there is no flow through the valve stem cap passage and wherein when the valve stem cap is seated in the valve seat the shuttle assembly is movable in response to a pressure differential between the inlet and the outlet for venting pressurized downstream fluid, the vented downstream fluid traveling through the outlet, a portion of the valve end cap passage, through the valve stem cap passage and around the shuttle assembly, through the radial passage in the valve stem, through the axial passage, and another portion of the valve end cap passage and out the inlet.