Talk:Gate valve

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|}which is better for flow control gate valve or butterfly valve

as far as i know, gate valve is mainly for either full flow or no flow. so i guess if for flow rate control, butterfly valve is better.

Gate valves are on-off valves. Butterfly valves can be used as either on=off or as throttling valves. A certain amount of flow turbulence will occur when butterfly valves are used for throttling due to their in-line design.

"Better" is a relative term. While gate valves are typically "on-off" valves, some types may be used to throttle, and depending upon the application, could be better than a butterfly valve in that particular application. Best to seek prefessional advice.

One category of a "gate" valve is a "knife" type gate valve, and these come in a couple of general configurations; Double-edge seat and "wedge" types.