DFRP rotary double-acting pneumatic piston actuators are designed for high torque applications. When combined with a positioner or a two-position control signal, DFRP actuators can be used for throttling or on/off control. DFRP actuators will always require a volume tank in order to hold a fail position.
| AVAILABLE VAVLE SHAFT COMPATIBILITY | ||||||
| VALVE SHAFT CONNECTION SIZES | ACTUATOR SIZES | |||||
| INCH | mm | 028 | 079 | 113 | 113 | 154 |
| 3/4 | 19.1 | ü | ü | ü | û | û |
| 7/8 | 22.2 | ü | ü | ü | û | û |
| 1 | 25.4 | ü | ü | ü | û | û |
| 1-1/4 | 31.8 | ü | ü | ü | û | û |
| 1-1/2 | 38.1 | ü | ü | ü | û | û |
| 1-3/4 | 44.5 | ü | ü | ü | ü | ü |
| 2 | 50.8 | ü | ü | ü | ü | ü |
| 2-1/8 | 54 | ü | ü | ü | ü | ü |
| 2-1/2 | 63.5 | û | û | û | ü | ü |
| 4 | 101.6 | û | û | û | ü | ü |
| AVAILABLE DFRP OPERATING PRESSURE, PISTON AREA AND TORQUE | ||||||||
| ACTUATOR SIZE | MAXIMUM OPERATING PRESSURE | PISTON AREA | 0-90 DEGREE MAXIMUM TORQUE | TORQUE PER PSIG | ||||
| PSIG | BARG | INCH2 | cm2 | lbf-in | N•m | lbf-in | N•m | |
| 028 | 110 | 7.58 | 28.27 | 182 | 7,104 | 9,626 | 47 | 5.31 |
| 079 | 100 | 6.89 | 78.54 | 507 | 13,800 | 18,710 | 175 | 19.77 |
| 112 | 85 | 5.86 | 113.1 | 730 | 16,896 | 22,913 | 199 | 22.48 |
| 113 | 110 | 7.58 | 113.1 | 730 | 56,004 | 75,926 | 373 | 42.14 |
| 154 | 110 | 7.58 | 153.94 | 993 | 65,004 | 88,128 | 433 | 48.92 |
| AVAILABLE DFRP CYLINDER DISPLACEMENT FOR 90 DEGREE ROTATION | ||||
| ACTUATOR SIZE | ACTUATOR PISTON POSITION | |||
| PISTON UP | PISTON DOWN | |||
| INCH3 | cm3 | INCH3 | cm3 | |
| 028 | 125 | 2,048 | 131 | 2,147 |
| 079 | 361 | 5,916 | 369 | 6,047 |
| 112 | 517 | 8,472 | 564 | 9,242 |
| 113 | 942 | 15,437 | 997 | 16,338 |
| 154 | 1,290 | 21,139 | 1,361 | 22,303 |
