Housing:Hard anodized Aluminum casting and extemal epoxy powder coated against severe industrial environment.
Gearing: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.
Motor:Specially designed induction motor to generate high starting torque and hight efficiency equipped with themal protector to prevent damage form over heating,Insulation class F.
External Mechanical stopper:Prevents over run of travel angle when limit switch fails.
Torque switches:Protect actuator from damage caused by overload from the driven valve over the whole travel,1 each for open/close.
Limit switches:Directly engaged with driving shaft to set accurate position of valve,supplying a dry contact signal.
Terminal:spring loaded push type terminal for tight wiring connection under severe vibration.
Manual override:Auto/Manual switchable lever and handwheel engagement for emergency manua resorted by motor start,unless lever padlocked to prevent this occuring.
Handwheel:Manual operated,turn ON/OFF valve directly when power off.