Series AP Cylinders
		Product Detail • Process Control Device • Utilized with Series B & J Cylinders • 2 1/2" - 8" Bores • 250 PSI Pneumatic C31 and J21 or J22 Actuator Positioner for Air Cylinders Ideal for the Positioning of: Butterfly Valves Dampers Louvers Gas and Oil Burner Valves Blast Gates Variable Pitch Fans Metering Pumps Speed Change Positioner cylinder operating pressure: 20 PSI to 100 PSI air only. Standard: Instrument Span: 12 PSI Range: 3 PSI to 15 PSI Consult factory for other options. Repeatability: 1/8" to 1/4" on all positioners. 2DO NOT ROTATE PISTON ROD. This will affect factory setting. Mounting Options: Flush mount (except Model B490) Front face mount Front flange mount (from Series B & J) Front, rear or center trunnion (from Series B & J) Accessories (from Series B & J) Positioner Specifications The C31 Positioner is a single acting, spring return. The piston rod extends on instrument air increase. A spring on the piston rod end causes the piston rod to retract as instrument air is decreased or lost. If air supply is lost, piston rod will retract. The extending force is diminished by the spring force; therefore, it is impossible to get 100% force in either direction. Model Spring Forces Available Strokes B490 Consult Factory 2" - 10" B700 Not Available 2" - 10" B960 Consult Factory 2" - 10" B1600 Consult Factory 2" - 10" B1960 Not Available   J2800 Consult Factory 2" - 10" J5000 Consult Factory 6" - 14" The J21 or J22 Positioners are double acting. The J21 starts out with the piston rod fully retracted and extends on instrument air increase. The J22 starts out with the piston rod fully extended and retracts on instrument air increase. 100% force in both directions is possible with the J21 or J22. Standard stroke lengths are 2" through 14" in 1" increments. C31 Specifications J21 or J22 Specifications Supply Pressure Effect: Less than 0.15% per PSI Supply Pressure Effect: Less than 0.15% per PSI Ambient Temperature Range: -20°F to +150°F Ambient Temperature Range: -20°F to +150°F Flow Capacity (Dynamic): Up to 5.0 SCFM in either direction with a 100 PSI supply. Flow Capacity (Dynamic): Up to 5.0 SCFM in either direction with a 100 PSI supply. Air Consumption (Static) 0.3 SCFM with 40 PSI supply pressure. Air Consumption (Static) 1.0 SCFM with 40 PSI supply pressure. Air Supply: 20 PSI to 100 PSI Air Supply: 20 PSI to 100 PSI Adjustment: Zero adjust is external and can be made without tools. Adjustment: Zero adjust is external and can be made without tools.