Must inspect the valves cave and sealing surface before installation. Not allowed the dirt or sand attachment.
2. Bolts connect with every position should be uniform tightened.
3. Check the packing assembly, packing sealing as well as the flexible of disc opening should be garanteed.
4. Before installation, users must collate the valve model, connecting size and the flow of medium. Ensure consistency with the requirements of the valve.
5. Before installation, users must set aside the requisite space for vales driving.
6. The wiring of the driving accord to circuit diagram.
7.Knife gate valve must have periodic maintenance. Do not allowed the collision and compression to influence the sealing.
Ball valve’s classification and advantage
Ball with circle channel, disc of the ball valves, rotates with the stem which is perpendicular to axes of channel to open or close the ball valve. Ball valve is usually used to open and close medium in pips and other equipments
Classification of Ball valve
Ball valve is classified by structural style as : Floating ball type, fixed ball type, flexibility ball valve, oil-tight ball valve. Ball valve is classified by channel as: straight way type ,globe valve, angie type ,three way type and so on. There are two kind of three way type: T shape and L shape. It is classified by connection style as :thread connection, flanged connection, welded type。

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