Manual override for short stroke valve
Method and apparatus for automatic shutoff of a valve when a...
Method and apparatus for orbital and seal welded relief...
Method and apparatus for remote control of an underwater valve
Method of and apparatus for remotely controlling orifice-opening
Method of making relief valve interchangeable buckling pins for
Miniature valve for filling the reservoir of an apparatus...
Mixing adaptor with rupturable membrane
Mud saver kelly valve
Mud saver valve
Mud saver valve with increased flow check valve
Multifunctional valve and use of same in reaction control...
Multiple function CO.sub.2 valve