Dampening of solenoid operated valve

Dampening resonance in a flow regulator

Dampening resonance in a flow regulator

Damper device

Damper with blade for sensing pressure differential

Damping pressure pulsations in piping systems

Damping valve for power steering

Decoupled housing seat

Dedrooped bypass valve

Defined lead path for high pressure seal

Demulsifier control system and method

Detachable locking device for a control valve and method

Detection method and apparatus

Detergent mixing apparatus and method

Device and method for changing the flow resistance of a fluid fl

Device and method for eliminating severe slugging in multiphase-

Device and method for flushing fluid lines

Device and method for preventing water from flowing past a close

Device and method for protecting a subterranean pipe from...

Device and method for pumping concrete