When the pipe diameter is not greater than 50mm, a globe valve should be used; when the pipe diameter is greater than 50mm, a gate valve and a butterfly valve should be used; when the flow and water pressure need to be adjusted, a regulating valve and a globe valve should be used; Gate valves should be used; gate valves and butterfly valves should be used on pipe sections where the water flow needs to flow in both directions, and globe valves should not be used; butterfly valves and ball valves should be used for parts with small installation space; globe valves should be used on pipe sections that are frequently opened and closed; A multi-function valve should be used on the outlet pipe of a large water pump.
