Manual override

• Auto / Manual switchable lever and handwheel engagement for emergency manual operation.

• Drive force automatically resorted by motor start, unless lever padlocked to prevent this occurring.

Limit switches 

• It is fastened by the two screws  above, the setting is simple, each  cam can be set separately.  

• Once the setup is complete, each  cam will always remain in this  position.

Terminal

• Spring loaded push type terminal for tight wiring connection under severe vibration.

• The number of terminals are 22 for users.

• Terminal length: 8-9mm

• Terminal size: 10×22×32

Space heater 

• Metal casing, fast heat, long life, with the built­in temperature switch to prevent overheating. 

• Core ceramic sealing member, there is no risk of leakage.

Captive cover bolts 

• Designed to prevent  loosing it during  maintenance or  installation. 

• All external bolts are  stainless steel for rust  prevention.

Shell 

Hard anodized Aluminum casting and external epoxy  powder coated against severe industrial environment. 

Worm gear 

Precisely machined double worm gear c/w minimum  back-lash, low noise, high output torque. 

Self locking 

Provided by double worm gearing to keep position of  valve unchanged against reverse torque from valve. 

Sealing 

By 0-ring in all interfaces IP66(standard), and double  o-ring for IP68 (option). 

Handwheel 

Different sizes depending on actuator torque, and knob  on handwheel for easy operation. 

Motor 

Specially designed induction motor to generate high  starting torque and high efficiency equipped with  thermal protector to prevent damage from over heating.  

Insulation class F

Tapered interface  between cover and  lower housing  

For easy lifting cover up  from lower housing for  wiring or maintenance.

Window 

Polycarbonate window,  built-in 0-rings, fixed metal  gland, the gland comes with  two drainage channels to  prevent water, easy to  observe.

Torque switches 

Protect actuator from damage caused  by overload from the driven valve  over the whole travel.  Once the torque switching acts, the  actuator will be stopped immediately.

Removable drive bushing 

Easy mounting base standard to  ISO5211. Bushings can be processed  according to different requirements,  four hanging ears made a close fit  with shaft and sleeve.

Indicator sustained by spring 

Direction of visual indicator is set by  factory. In case of changing its direction,just grip  the indicator plate and change the position.  Spring beneath indicator plate sustains the  set position unchanged. No need to loosen screw and tighten again  at all.