1. The handwheel, the handle and the transmission mechanism are not allowed to be used for hoisting, and the collision is strictly prohibited.
2. The double gate gate valve should be mounted vertically (that is, the stem is in the vertical position and the handwheel is at the top).
3. Valve with bypass valve should be opened by the bypass valve before opening (to balance the pressure difference between inlet and outlet and reduce the opening force).
4. The gate valve with transmission mechanism shall be installed according to the specification of the product usage.
5. If the valve is often switched on, lubricate at least once a month.