Manual Override
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Main use of the product
This manual mechanism is used in combination with pneumatic actuator assembly for manual and pneumatic actuation of butterfly valves, ball valves, etc. for 90° opening.
Features
- Small size, light weight, reasonable design, novel style
- Product serialization, output torque and pneumatic device, matching various valves.
- The inner hole of the turbine connection has two keyways separated by 90° so that the user can select the relative position of the device to the valve as needed.
- Lift the limit pull ring, rotate the eccentric device 90 ° limit pin automatic limit, achieve pneumatic, and vice versa.
- When the product leaves the factory, it is equipped with special grease. After assembly with the valve, it is sealed, dustproof and waterproof. The protection grades are IP65, IP67 and IP68.
SD series pneumatic valve manual mechanism technical parameters
Manual mechanism model | AT double action (DA) | AT single action (SR) | Speed ratio | Output torque |
SD-1 | DA52-92 | SR52-83 | 26:1 | 180 |
SD-2 | DA105-125 | SR92-105 | 28:1 | 320 |
SD-3 | DA125-145 | SR115-125 | 38:1 | 680 |
SD-4 | DA160-190 | SR145-160 | 54:1 | 1200 |
SD-5 | DA210-240 | SR190-210 | 80:1 | 2100 |
SD-6 | DA240-270 | SR210-240 | 78:1 | 3000 |
SD-7 | DA270-300 | SR240-270 | 98:1 | 3800 |
Main component materials
No. | Name | Material | No. | Name | Material |
1 | drive spindle | alloy steel | 9 | turbine | ductile iron |
2 | sealing ring | nitrile rubber | 10 | plane bearing | alloy steel |
3 | circlip | stainless steel (304) | 11 | handle | stainless steel (304) |
4 | upper cover | aluminum alloy | 12 | eccentric sleeve | alloy steel |
5 | Fasteners | stainless steel (304) | 13 | Sealing ring | Nitrile rubber |
6 | Locating Pin | Alloy Steel | 14 | Worm | Alloy Steel |
7 | sealing ring | nitrile rubber | 15 | transmission rod | alloy steel |
8 | sealing ring | nitrile rubber | 16 | case | aluminum alloy |
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