Double actuator control valve that has a neutral position

Double angled-disc diverter valve or the like

Double diaphragm pump having a spool valve

Double diaphragm pump including spool valve air motor

Double solenoid latching ball valve with a hollow ball

Double solenoid type electromagnetic valve

Double valve

Double valve mechanism for an acoustic modulator

Double valve mechanism for controlling fluid flows

Double wall plug control valve

Double-seat electromagnetic valve

Double-solenoid single-stem four-way valve

Double-solenoid type electromagnetic valve

Drag ball valve

Drag ball valve including variable pressure reducing means

Drilling choke valve

Drive for an oscillatory mechanical system

Dual active selector valve

Dual random access, three-way rotary valve apparatus

Dual recycling/transfer furnace flow management valve for...