double ferrulr needle valve 1,material:316ss 304ss brass 2,size:1/4"OD-1"OD 3,pressure:6000psi 316ss high pressure needle ... bonnet Corrosive media, the Austrian style stainless steel Underground needle valve full bore all-weldedThe city gas or natural gas ... needle valve high pressure needle valve 6000psiwelcome in One piece body, no weld joints.Stem tip 17-4ph for long life. double ferrulr needle ...