Needle valve spool is a very sharp cone, as if the same needle into the valve seat, hence the name. Needle valve than other types of valves can withstand greater pressure, good sealing performance, it is generally used for small flow, high pressure gas or liquid seal. Needle valve and pressure gauge with the use of the most appropriate, the general needle valves are made of thread connection (of course, there are flanges and other forms of connection).
Note: parameters are for reference only, or are not full. Valve can be used in accordance with the requirements of different pressure, material, diameter, drive, etc.. Specific please contact or online advisory contact.
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