Part of the tranisition back to the manual valve device
This series of beautiful appearance,is a 90°rotary hand drive .Applied to ball valve ,butterfly valve plug valve and other types .Box with nodular asting,welding steel hand wheel .Producl itself are locked institution ,can prevent others from freely open the valve .The ISO 5211 series flange used in all international standards the model is complete easy to match the valve .Apperaance ,the output torque ,favored by domestic and foreign customers,especially for export-oriented valve .

It is sasy opcning and closing that the gear box are dircctly moutad on Gate and Globe valve under Thrust loads.The gear box enable efficiency to rise over 90% which consisitsof suitable bearing . Regarding gear .It makes the gear box relax from noise under optimum heat treatment and precise Grinding. It can avoid from waterproof and oil leakage as sophisticated oil seal is used at the Throngh pat .Protecton Grade can be IP65.Hand wheel and stem cover are optional index.