Patent ID: 6241213
Filing Date: 2001-06-05
Classification: F16K

Abstract:
A valve comprising:a bonnet;a body secured to said bonnet and including at least two ports and at least one weir positioned between said ports;a valve stem being movably coupled with said bonnet, said valve stem including first and second longitudinal ends, and a recess in said first longitudinal end;a diaphragm positioned substantially adjacent to said second end of said valve stem so as to be deflectable towards said weir by said valve stem to restrict a flow between said ports;a handwheel rotatably secured to said valve stem so as to enable a torque to be applied to said valve stem, said handwheel including a longitudinal aperture; and,a screw directed through and engaged with said handwheel aperture and being selectively engagable within said recess of said valve stem, such that said valve stem and handwheel remain in a constant relative longitudinal position with respect to one another, and when said diaphragm sets against said weir said handwheel abuts said bonnet to serve as a closing valve travel stop.