Manual Override

Manual Override
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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