Installation and maintain of gate valve
The handwheel, handle and transmission mechanism are not allowed for lifting and prohibit collision.
Double gate valves should be installed vertically (i.e. stem in a vertical position, the handwheel at the top).
With the by-pass gate valves should be opened in open before the by-pass (to balance the import and export of differential pressure and decrease open).
Belt transmission mechanism of gate, according to provisions of product specifications.
If the valve is often switch, at least once per month lubrication.
