Why can’t a needle valve be used as a throttle valve in the pneumatic circuit of a valve?
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I read in the documentation that needle valves cannot be used as throttling valves in the valve gas circuit. I was wondering if anyone knows why
What kind of materials have such regulations? Could you send it up for me to see? The throttle effect of the needle valve is good.
Throttle on the gas line, technical information from a manufacturer
In the pneumatic circuit of control valves for instruments, needle valves are commonly used to control the speed of operation, and they deliver very good results. I don’t know which manufacturer’s information it is?
The flow resistance of needle valves is higher than that of ball valves, and ball valves do not cut off flow when fully open. I’m not sure if the information you mentioned was considered in this way.
Ball valves are the best choice for on-off valves; they offer excellent shut-off performance, no resistance when fully open, and good sealing when fully closed. Globe valves (needle valves) are the most effective for use as control valves; they regulate the flow rate, thereby controlling the speed at which the valve opens and closes.