What valves are used in pipelines for analysis?
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Pipelines for analyzing gases and liquids are led out from containers and pipes; what type of valve should be chosen? Needle valve? Valve stop? Ball valve?
This post was last edited by Anti-corrosion Machinery 0 on 2018-11-19 09:25: Sampling valve
Are those I mentioned no longer valid? :lol
Pin valves are not highly recommended as they are prone to internal leakage, which makes subsequent maintenance difficult. Ball valves and globe valves are suitable as long as they have good sealing performance, meet the requirements in terms of temperature and pressure resistance, and have compatible materials. If high purity and cleanliness are required, it is recommended to consider diaphragm valves.
A needle valve or globe valve, which can regulate flow rate
Globe valves aren’t very good at regulating flow, but they can be adjusted.
Globe valves work well for regulating flow, though their precision is slightly lower than that of needle valves. It is possible to purchase them with the specification: needle-type globe valve
Ball valves are probably the best option, but good quality ball valves are quite expensive
What you mentioned makes sense; it’s all feasible. However, from a safety perspective, the sampling valve is more convenient to operate and offers higher controllability.