Patent ID: 7290753

Claim:
A torque sensitive sanitary diaphragm valve comprising: (a) a housing having a flow housing area with a shape for the transfer of solution through the flow housing area and a stem housing area with a first opening attached to the flow housing area, a second opening, and a handle attachment area threaded; (b) a stem with a top, a middle enclosed in the stem housing area, and a bottom shaped to mate with the shape of the flow housing area; (c) a handle counter-threaded for attachment to the stem housing attachment area and affixed to the stem allowing the handle to pivot without rotation of the stem; (d) a diaphragm with a chemical contact side and a stem contact side located in the first opening of the stem housing between the stem and the flow housing area; and (e) a slipping mechanism located either between the stem housing and the stem housing's threaded handle attachment area or between the handle and the handle's counter-threaded stem housing attachment area.