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

Sealed by O-ring in all interfaces, and double o-ring sealing for IP68(option)

EP type grease, maintenance free service for a long period time
 
Difference size depending on actuator torque, and knob on hand wheel for easy operation
 
Precisely machined double worm gear c/w minimum back-lash, low noise, high output torque
 
Proviede by double worm gearing to keep position of valve unchanged against reverse torque from valve