Linear pumps work by reduction of a volume by direct action of a shuttle on a membrane or piston.

	Flow from 1.6 l/min to 300 l/min
	Very long life
	Oil-less
	Quiet operation
	Low power consumption
	Fluid capability with smaller models

Technical Overview
Linear and vibrating armature pumps and compressors utilise electromagnetism to apply force to a diaphragm or piston to positively displace air. Alternating current in electrical coils reverses the magnetic field induced around a magnetised rod at a rate determined by the supply frequency. Movement of the diaphragm/piston, attached to the end of the rod, forces air through one-way valves.

Linear/vibrating armature pumps and compressors are quiet and efficient. With fewer wearing parts than equivalent reciprocating devices, linear compressors are regarded as long life, low maintenance devices. However, the pneumatic performance is limited to the strength of induced magnetic field, making them suitable for low differential pressure applications.

Rietschle Thomas has a wide range of linear/vibrating armature pumps & compressors with flows ranging from 0.7 to 300 litres per minute under free flow conditions.