1.It is easy opening & closing that the gear box are directly mounted on gate & globe valve under thrust loads. 2.The gear box enable efficiency to rise over 90%.Which consists of suitable bearing. 3.Regarding gear, it makes the gear box relax from noise under optimum heat treatment & precise grinding. 4.It can avoid from waterproof & oil leakage as sophisticated oil seal is used at the through part.Protection grade can be ip65. 5.Hand wheel & stem cover are optional index.
