Video
Nondeclutchable Manual Overrides
Used with pneumatic, hydraulic and backdrivable electric actuators.
DYNATORQUE SRD
Nondeclutchable manual overrides
Our DYNATORQUE SRD nondeclutchable manual overrides are used with pneumatic, hydraulic and backdrivable electric actuators. These products are sandwich mounted as part of an automated valve package to provide manual operation of the automated valve if a loss of plant air supply, power gas, hydraulic fluid power or electricity occurs.
- Standard ISO 5211 mounting dimensions on top and bottom flanges or custom machined for mounting to actuator and valve
- Transparent to valve operation when disengaged
- For spring-return applications only
- Eleven different frame and spur combinations for output torque from 3,000 to 260,000 lbf.in [340 to 29,375 N.m]
- Select frame sizes available with chainwheel option for spring-return actuators in overhead locations
- Nondeclutchable override sandwich mounted between valve and actuator
DYNATORQUE SRD
Nondeclutchable manual override
| Model | Spring-Return Actuator Actuator Spring-End Torque, lbf.in [N.m] |
Override Max. Torque Rating, lbf.in [N.m] | Mech. Adv. | Handwheel Size, in | Rim Pull, lbf | Hsg. Btm. Mounting Pattern (Min. BCD/Tap) |
Hsg. Btm. Mounting Pattern (Std. BCD/Tap) |
Hsg. Btm. Mounting Pattern (Max. BCD/Tap) |
Cov. Mounting Pattern (Min. BCD/Tap) |
Cov. Mounting Pattern (Std. BCD/Tap) |
Cov. Mounting Pattern (Max. BCD/Tap) |
Total Weight, lbm |
| DT3SRD | 1,111 [126] | 3,000 [339] | 8.10 | 10 | 74 | 1.968/4-20 |
2.756-(4)5/16-18 |
4.016-3/8-16 |
2.756-.344 |
2.756-(4).344 |
4.250-.406 |
19 |
| DT7SRD | 2,593 [293] | 7,000 [791] | 12.96 | 14 | 77 | 3.250-3/8-16 |
4.016-(4)3/8-16 |
5.000-1/2-13 |
3.750-.438 |
4.016-(4).406 |
5.000-.562 |
27 |
| DT12SRD | 4,444 [502] | 12,000 [1356] | 13.68 | 24 | 73 | 3.750-3/8-16 |
4.016-(4)3/8-16 |
6.496-3/4-10 |
4.750-.562 |
4.921-(4).562 |
6.496-.812 |
45 |
| DT21SRD | 7,778 [879] | 21,000 [2373] | 22.50 | 30 | 62 | 4.500-5/8-11 |
5.512-(4)5/8-11 |
7.000-3/4-10 |
5.500-.562 |
5.512-(4).688 |
7.750-.812 |
62 |
| DT36SRD | 13,333 [1506] | 36,000 [4067] | 19.00 | 36 | 105 | 6.000-1/2-13 |
6.496-(4)3/4-10 |
10.250-3/4-10 |
6.000-.563 |
6.496-(4).812 |
10.000-.688 |
126 |
| DT40SRD | 14,815 [1674] | 40,000 [4519] | 27.60 | 36 | 81 | 6.000-1/2-13 |
6.496-(4)3/4-10 |
10.250-3/4-10 |
6.000-.563 |
6.496-(4).812 |
10.000-.688 |
126 |
| DT50SRD | 18,519 [2092] | 50,000 [5649] | 60.80 | 36 | 46 | 6.000-1/2-13 |
6.496-(4)3/4-10 |
10.250-3/4-10 |
6.000-.563 |
6.496-(4).812 |
10.000-.688 |
154 |
| DT54SRD | 23,330 [2636] | 63,000 [7118] | 91.20 | 20 | 69 | 6.000-1/2-13 |
6.496-(4)3/4-10 |
10.250-3/4-10 |
6.000-.563 |
6.496-(4).812 |
10.000-.688 |
151 |
| DT90SRD | 33,333 [3766] | 90,000 [10,169] | 49.92 | 36 | 100 | 6.500-3/4-10 |
10.000-(8)5/8-11 |
11.750-3/4-10 |
8.500-.688 |
10.000-(8).688 |
10.750-.812 |
258 |
| DT140SRD | 51,852 [5859] | 140,000 [15,818] | 78.00 | 36 | 100 | 6.500-3/4-10 |
10.000-(8)5/8-11 |
11.750-3/4-10 |
8.500-.688 |
10.000-(8).688 |
10.750-.812 |
261 |
| DT200SRD | 74,074 [8369] | 200,000 [22,597] | 150.00 | 36 | 74 | 10.000-5/-11 |
14.016-(8)1-1/8-7 |
15.500-1-8 |
12.450-.688 |
14.016-(8)1.188 |
15.000-1.188 |
724 |
| DT260SRD | 96,296 [10,880] | 260,000 [29,376] | 264.00 | 30 | 66 | 10.000-5/-11 |
14.016-(8)1-1/8-7 |
15.500-1-8 |
12.450-.688 |
14.016-(8)1.188 |
15.000-1.188 |
764 |
Notes
- Handwheel and rim efforts shown are calculated at unit maximum torque rating.
- DT50SD and DT90SD have a 4:1 spur assist; DT54SD and DT140SD have a 6:1 spur assist.
- Handwheels listed are recommended sizes to produce full rated torque with rim effort listed.
- Standard mounting patterns on all units are per ISO 5211 (UNC) specifications.
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