(57) A device (5) for economizing on compressed air, or other fluids under pressure fed
to pneumatic cylinders (1) used for example in the field of machines and machine-tools
in general.
The device comprises a pressure reducing valve (12), arranged within a first passage
(9,10,11) for feeding the fluid to the cylinder (1) to be controlled, and a single-acting
valve (25) located within a second passage (22) for the return of the fluid from said
cylinder (1) which passage coaxially encircles the pressure reducing valve (12), thereby
achieving a device with a compact and functional structure.
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