Model DFR rotary spring and diaphragm actuators are large diaphragm area actuators that allow for low-pressure operation. The spring provides fail safe positioning for a control valve on loss of pneumatic supply pressure. DFR actuators can be used to automate control valves for throttling or on/off control of liquids or gases.
| AVAILABLE DFR DIAPHRAGM CASING VOLUMES | ||||||
| CASING SIZE | CLEARANCE VOLUME (1) | CASING VOLUME (2) | ||||
| 60 DEGREE ROTATION | 90 DEGREE ROTATION | |||||
| INCH3 | cm3 | INCH3 | cm3 | INCH3 | cm3 | |
| 26 | 40 | 655 | 67 | 1,098 | 76 | 1,245 |
| 47 | 38 | 623 | 115 | 1,890 | 146 | 2,390 |
| 70 | 64 | 1,050 | 250 | 4,100 | 330 | 5,410 |
| 156 | 216 | 3,540 | 708 | 11,600 | 927 | 15,200 |
| 220 | 213 | 3,490 | 850 | 13,929 | 1,161 | 19,025 |
| NOTES: | Volume when the diaphragm is in the up position. | |||||
| This value includes the clearance volume. | ||||||
| AVAILABLE VAVLE SHAFT COMPATIBILITY | |||||||||
| ACTUATOR SIZE | VALVE SHAFT SIZES | ||||||||
| 1/2" (12.7mm) | 5/8" (15.9mm) | 3/4" (19.1mm) | 7/8" (22.2mm) | 1" (25.4mm) | 1-1/4" (31.8mm) | 1-1/2" (38.1mm) | 1-3/4" (44.5mm) | 2" (50.8mm) | |
| 026 | ü | û | û | û | û | û | û | û | û |
| 047 | ü | ü | ü | û | û | û | û | û | û |
| 070 | ü | ü | ü | ü | ü | û | û | û | û |
| 156 | û | û | ü | ü | ü | ü | ü | û | û |
| 220 | û | û | û | û | û | ü | ü | ü | ü |
| AVAILABLE OUTPUT TORQUE WITH 23 PSIG (1.59 BAR) SUPPLY PRESSURE - 0-18 PSIG (0-1.24 BAR) OPERATING RANGE | |||||||||||||
| ACTUATOR SIZE | ACTUATOR SPRING CODE | ACTION | |||||||||||
| FAIL OPEN | FAIL CLOSED | ||||||||||||
| TORQUE | START STROKE | TORQUE | START STROKE | ||||||||||
| BREAKOUT | OPERATING | BREAKOUT | OPERATING | ||||||||||
| lbf-in | N•m | lbf-in | N•m | PSIG | BARG | lbf-in | N•m | lbf-in | N•m | PSIG | BARG | ||
| 026 | A | 130 | 15 | 130 | 15 | 3 | 21 | 90 | 10 | 200 | 23 | 3.9 | 27 |
| 047 | C | 172 | 19 | 399 | 45 | 3 | 21 | 336 | 38 | 170 | 19 | 4.9 | 34 |
| 070 | D | 380 | 43 | 980 | 111 | 3 | 21 | 730 | 82 | 620 | 70 | 4.3 | 30 |
| 156 | K | 2,140 | 242 | 2,320 | 262 | 3 | 21 | 1,630 | 184 | 3,160 | 357 | 3.7 | 26 |
| 070 | I | 770 | 87 | 890 | 101 | 3 | 21 | 520 | 59 | 1,290 | 146 | 3 | 21 |
| AVAILABLE OUTPUT TORQUE WITH 38 PSIG (2.62 BAR) SUPPLY PRESSURE - 0-33 PSIG (0-2.28 BAR) OPERATING RANGE | |||||||||||||
| ACTUATOR SIZE | ACTUATOR SPRING CODE | ACTION | |||||||||||
| FAIL OPEN | FAIL CLOSED | ||||||||||||
| TORQUE | START STROKE | TORQUE | START STROKE | ||||||||||
| BREAKOUT | OPERATING | BREAKOUT | OPERATING | ||||||||||
| lbf-in | N•m | lbf-in | N•m | PSIG | BARG | lbf-in | N•m | lbf-in | N•m | PSIG | BARG | ||
| 026 | B | 280 | 32 | 160 | 18 | 3 | 21 | 160 | 18 | 370 | 42 | 6.8 | 47 |
| 047 | C | 807 | 91 | 555 | 63 | 4.9 | 34 | 334 | 38 | 1,139 | 129 | 4.9 | 34 |
| 047 | H | 977 | 110 | 521 | 59 | 3 | 21 | 440 | 50 | 1,162 | 131 | 6.3 | 43 |
| 070 | D | 1,960 | 221 | 1,260 | 142 | 4.3 | 30 | 730 | 82 | 3,050 | 344 | 4.3 | 30 |
| 070 | E | 1,409 | 156 | 1,174 | 133 | 3 | 21 | 1,030 | 116 | 1,820 | 206 | 6 | 41 |
| 156 | F | 4,160 | 470 | 3,020 | 341 | 3 | 21 | 3,090 | 349 | 4,760 | 538 | 7 | 48 |
| 070 | G | 5,720 | 646 | 3,690 | 417 | 3 | 21 | 4,810 | 543 | 5,540 | 626 | 10.1 | 70 |
| AVAILABLE OUTPUT TORQUE WITH 32 PSIG (2.21 BAR) SUPPLY PRESSURE - 3-27 PSIG (21-1.86 BAR) OPERATING RANGE | |||||||||||||
| ACTUATOR SIZE | ACTUATOR SPRING CODE | ACTION | |||||||||||
| FAIL OPEN | FAIL CLOSED | ||||||||||||
| TORQUE | START STROKE | TORQUE | START STROKE | ||||||||||
| BREAKOUT | OPERATING | BREAKOUT | OPERATING | ||||||||||
| lbf-in | N•m | lbf-in | N•m | PSIG | BARG | lbf-in | N•m | lbf-in | N•m | PSIG | BARG | ||
| 026 | A | 164 | 222 | 67 | 91 | 3.9 | 27 | N/A | N/A | N/A | N/A | N/A | N/A |
| 026 | B | 163 | 221 | 73 | 99 | 3.1 | 21 | 89 | 121 | 218 | 296 | 6.8 | 47 |
| 047 | C | 591 | 801 | 270 | 366 | 4 | 28 | 147 | 199 | 787 | 1,067 | 4.9 | 34 |
| 047 | H | 364 | 494 | 270 | 366 | 3.1 | 21 | 249 | 338 | 375 | 508 | 6.3 | 43 |
| 070 | D | 1,432 | 1,942 | 543 | 736 | 3.4 | 23 | 218 | 296 | 2,082 | 2,823 | 4.3 | 30 |
| 070 | E | 662 | 898 | 644 | 873 | 3.1 | 21 | 517 | 701 | 845 | 1,146 | 6 | 41 |
| 070 | I | 1,010 | 1,369 | 364 | 494 | 3.1 | 21 | N/A | N/A | N/A | N/A | N/A | N/A |
| 156 | F | 2,156 | 2,919 | 1,649 | 2,236 | 3.1 | 21 | 1,776 | 2,408 | 2,135 | 2,895 | 7 | 48 |
| 156 | K | 2,970 | 4,027 | 1,338 | 1,814 | 3.7 | 26 | N/A | N/A | N/A | N/A | N/A | N/A |
| 070 | G | 2,989 | 4,053 | 1,880 | 2,549 | 3.1 | 21 | N/A | N/A | N/A | N/A | N/A | N/A |
