1, Handwheel, handle and transmission mechanism are not allowed to be used for lifting, and the collision is forbidden.
2, double gate valve should be installed vertically (that is, the stem is in the vertical position, the handwheel at the top).
3, the valve with the bypass valve before opening should open the bypass valve (in order to balance the pressure difference in import and export and reduce the opening force).
4, with the transmission mechanism of the gate valve, according to the provisions of the use of the product installation.
5. If the valve is used frequently, lubricate at least once a month.
6, gate valve only for full open, all kinds of pipe or equipment on the operation of the media, not allowed for throttling.
7, with Handwheel or the handle of the gate valve, operation shall not increase the auxiliary lever (if the seal is not strict, you should check the repair sealing surface or other parts). Handwheel, handle clockwise to turn off, turn on the contrary. The gate valve with the transmission mechanism shall be used in accordance with the instructions of the product.