J21W-320P external thread the needle valve selected Shanghai fast, high-quality J21W-320P external thread the needle valve, 100% quality assurance. J21W-320P external thread the needle valve main parts and materials Part Name Part name stem, bonnet Stem, Bonnet stem, the valve Stem, Disc packing Packing J21W-16P chrome-nickel-chromium-nickel stainless steel Cr.Ni Stainless steel Cr.Ni Stainless steel PTFE, flexible graphite PTEF, Soft graphite J21W-40, J21W-160 high-quality carbon steel High grade carbon steel chrome stainless Cr. Stainless steel main performance specifications Model Type Nominal pressure (MPa) Nominal pressure test pressure PS ( MPa) Test pressure Working Pressure (MPa) Working pressuer Temperature (℃) Working temperature Applicable medium Applicable mediun Shell casing seal (liquid) Seal Seal (gas) Seal J21W-16 1.6 2.4 1.76 0.6 1.6 P≤200 ℃ LPG water, oil and other Petroleun gas Water, Oil etc. J21W-40P 4.0 6.0 4.4 0.6 4.0 J21W-160 16.0 17.6 17.6 0.6 16.0 C≤425 ℃ J21W-320P 32.0 48.0 35.2 0.6 32.0 Main external and connecting dimensions nominal diameter (mm) Nominal diameter Dimensions Dimensions Weight (Kg) Weight D0 D1 D2 L H1 H2 M 6 70 14 6 135 96 106 20 × 1.5 0.8 10 80 18 10 156 115 125 24 × 1.5 1.1 15 100 22 15 180 122 132 30 × 2 2.0 20 110 28 18 185 156 166 36 × 2 3.0 25 140 33 22 185 169 180 42 × 2 3.2