Mixing adaptor with rupturable membrane
Motor vehicle fuel tank with heat responsive closure means
Mud saver kelly valve
Mud saver valve
Mud saver valve with increased flow check valve
Multi-use damper
Multifunctional valve and use of same in reaction control...
Multiple function CO.sub.2 valve
Non-pyrotechnic isolation valve element
Non-reclosing pressure relief device for vacuum systems
Normally-closed electro-thermally operated flood valve
One shot valve
One shot valve for operating down-hole well working and...
One-piece shut-off valve
One-quarter turn ball valve closer
Overpressure protector
Overtemperature shut-off valve with sealing spring for automatic
Photo-electric burst disc indicator
Piercing valve stem assembly and system
Pilot operated rupture disk