Instrument needle valve Works

Instrument needle valve Works
Any action of the valve is to cut off the flow. Depending on the spool, can be divided into the cut-off valves, valves, plug valves, Ball valves, butterfly valves, needle valves, etc. instrumentation needle valve spool is a very sharp cone body, as if the same needle is inserted into the valve seat, hence the name.
Needle valve shape than other types of valves that can withstand greater pressure, good sealing performance, it is generally used to seal small flow, high pressure gas or liquid medium. Needle valve shape is used in conjunction with a pressure gauge The most suitable of the general shape of the needle valve threaded connections are made. Nominal: PN2.5 PN4 PN6.4 PN16 PN32Mpa Nominal Diameter: DN5 ~ DN25 Suitable medium: oil, water and other non-corrosive gas ﹑ or corrosive media Temperature: -20 ℃ ~ + 440 ℃ -70 ℃ ~ -240 ℃ ≤540 ℃ ≤570 ℃ and other manufacturing materials: 20 # ﹑ 1Cr18Ni9Ti ﹑ ﹑ 304﹑316﹑316L 12Cr1Mov like.