The best valve types to choose are gate valves and ball valves; the reason why globe valves should not be selected
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Gate valves are expensive and create high resistance
Globe valves have high flow resistance~~~~~~~~
Globe valves offer good adjustability, but they present high resistance; gate valves are generally chosen for shut-off purposes, and the selection should be based on specific requirements and installation location
Is this proposition correct? There must be different applicable ranges for each one.
There’s no such way of making a choice – gate valves and ball valves are generally not used for regulating flow, while stop valves are not used as isolation valves
This post was last edited by kaminocmyhc on 2010-11-10 14:14. I don’t think so. For example, in the outlet valves of certain pumps, there is no pressure behind the valve while the pressure in front of it is high; installing gate valves may make it difficult to open the outlet valve when starting the pump. In our case, globe valves are used in such situations
Reply to 6# chen-jun-1024 regarding the moderator’s reply, I have a suggestion: First of all, the pressure is not high, and for pump outlet pipes with smaller diameters, it is quite convenient to open the gate valves； Secondly, if the pressure is high and the pipe diameter is large, balance pipes can be added at the inlet and outlet of the gate valve, which facilitates opening and closing. The reason for including a stop valve on the outlet is probably to meet the need for flow control. Feel free to point out any mistakes.
Yes, it mainly depends on the industry or application for which it is used. Each type of valve has its own advantages. Are ball valves good? In situations where there are large particles and shutdown is required, these valves are prone to getting stuck and other problems.
What the original poster means is that, provided all three types of valves can meet the operational requirements, it’s better to avoid choosing a globe valve·········
Each type of valve has its own purpose; it depends on how you intend to use it. Is it useful to install an electromagnetic stop valve on household faucets? It’s just a waste – a regular ball valve will suffice. Gate valves and stop valves serve different purposes
It mainly depends on the intended use – what the requirements are for piping or the manufacturing process – and then the valve is selected; each type of valve has its own specific application