Patent ID: 6448567
Filing Date: 2002-09-10
Classification: F16K

Abstract:
A valve comprising:a valve body having a valve passage that allows fluid communication between a first side and a second side of the valve body; a valve gate seat associated with the valve body; a valve gate moveable along a gate passage between a closed position and a retracted position, the gate passage communicating with the valve passage, and at least a portion of the valve gate contacting the gate seat when in the closed position to prevent fluid communication between the first and second sides; and a shutter that impedes communication between the valve passage and the valve gate when the valve gate is in the retracted position, the shutter being positioned away from and out of contact with the valve gate when the valve gate is in the closed position and being actuatable by movement of the valve gate to move between an impeding position and an unimpeding position.