professional manufactuer of stainless steel needle valve,high pressure and leakage-proof,long life,reliable quality Features for female & male needle valve: 1. Nominal pressure: 3000psi,6000psi.2. Nominal diameter: 1/4",3/8",1/2",3/4",1"...2".3. Applicable medium: W.O.G,and some corrosive medium.4. Applicable Temperature: PTFE packing -15°C--<230°C),Grafoil Packing<570°C.5. Materials: A105,SS304, ...