1.All mounting bases conforms to ISO5211;
2. Body material can be ductil iron  ,stainless steel or WCB, worm gear material is available in two options from ductile iron or aluminum bronze.
3. Worm is ASTM 1045 heat treated carbon steel.
It is suitable for ball valves,butterfly valves and plug valves etc.
4. Fresh pattern and nice appearance. Tapered roller bearing and thrust ball  bearing combination makes the transmission more flexible and efficient.
5.Protection grade can be IP65, IP67, IP68 according to customers requirements.

Features
1.Small in volume, light in weight, reasonable design and strong in output, labor saving and portable.
2.The device are equipped with limit screws which can be adjusted within 5 degree at position in open and close.
3.Indicator board of open degree is directly installed on output worm gear,so indication is accurate and audio-visual.
4.There are two keyways apart with 90 degree set on the inner hole of worm gear for need.
5. The output flange accords with standard ISO5211 and can be machined as customers' special requirements.
6.The dedicated grease has been loaded before leaving factory, the shell is sealed up for waterproof.