The Enfield S2 pneumatic positioning system is a servo pneumatic proportional control valve offering all in one positioning of varying loads at high speeds for lower cost than competing electric drives and hydraulic systems.

S2 Positioning System

Flow Capacity (approx.)
(80 psig to atmosphere)
Max. Valve Coefficient (Cv)
Shifting Time

Positional Accuracy


1300 SLPM
(46 SCFM)
1/4″ NPTF
2.5 ms


The following chart highlights some of the common actuator sizes for horizontal applications. To date, the S2 has been utilized on up to 12″ bore cylinders. For sizing/speed combinations for vertical applications please contact us.

Maximum Cylinder Speed vs Moving Mass: Bore Size Comparison


S2 Setup Video

S2 Overview Video