Lockout valve
Locomotive reversing gear
Logic gates
Logic valve
Long stroke actuation system
Long stroke, large bore, low friction hydraulic actuators
Lost motion connection means for hydraulic piston-cylinder...
Low drag vortex generators
Low inertia pneumatic analog-to-digital converter
Low noise hydraulic power unit for an auto hoist lift
Low noise hydraulic servo valve
Low permeation hydraulic accumulator
Low power charge system
Low pressure actuator
Low pressure fluid supply valve system
Low pressure signal driven flow control system
Low speed return
Lubricating means for gas-operated cylinders