Pneumatic controllers measure temperatures or pressures and transfer a corrective air signal to final control elements. Raptor Supplies offers a range of pneumatic speed controllers from brands like Honeywell, Johnson Controls and Siemens. They are typically used in automatic control systems for handling flow rates, pressure & temperature levels and other required processes. These controllers operate through coordination of thermal or pressure sensing systems and air signal relay systems. Choose from an array of pneumatic controllers, available in 0.019 SCFM, 0.07 SCFM, 0.2 SCFM and 60 SCIM air consumption options.