J19-15 needle shut-off valves election Shanghai fast, high-quality J19-15 needle valve, 100% quality assurance. J19-15 needle valve shut-off valve is a very sharp cone, it seems like the needle is inserted into the seat, hence the name. Needle valve 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 and pressure gauge with the use of the most appropriate, and generally are made of needle valve threaded connections (flange and of course there are other forms of connection). PN: PN2.5 PN4 PN6.4 PN16 PN32Mpa nominal diameter: DN5 ~ DN25 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 etc.