J21/23 Type External Thread Needle Valve
manufacturer: Kaiweixi Valve Group Co., Ltd
Eml: Merry@kaiweixi.com
Tel: +86 (577) 67038872
Mob: +86 18157711652（WeChat Same Account）
product drawing
J21/23W type external thread needle valve(with connecting pipe)
Dimensions & constructral diagram
J21/23W type external thread needle valve(with connecting pipe) constructral diagram
The materials of main parts
| Part name | Stem, Bonnet | Stem, Disc | Packing |
| J21/3W-16P | Cr-Ni stainless steel | Cr-Ni Stainless steel | PTEF,flexible graphite |
| J21/3W-160、J21/3W -40 | High quality carbon steel | Cr stainless steel |
Main performance and specifications
| Type | Nominal Pressure（MPa） | Test pressure PS（MPa） | Working Pressure（MPa） | Working temperature (℃) | applicable medium | ||
| Shell（MPa） | Sealing(liquid) | Sealing(gas) | |||||
| J21/3W -16 | 1.6 | 2.4 | 1.76 | 0.6 | 1.6 | P≤540℃ | Petroleum gas Water,acid,Steam, Oil, etc. |
| J21/3W-40P | 4.0 | 6.0 | 4.4 | 0.6 | 4.0 | ||
| J21/3W-160 | 16.0 | 24.0 | 17.6 | 0.6 | 16.0 | C≤425℃ | |
| J21/3W -320P | 32.0 | 48.0 | 35.2 | 0.6 | 32.0 | ||
Main external and connection dimensions(mm)
| Nominal diameter DN(mm) | Dimensions | ?Weight (Kg) | ||||||
| Do | D1 | D2 | L | H1 | H2 | M | ||
| 6 | 65 | 14 | 6 | 140 | 96 | 106 | 20×1.5 | 0.9 |
| 10 | 80 | 18 | 10 | 160 | 115 | 125 | 24×1.5 | 1.18 |
| 15 | 100 | 22 | 15 | 180 | 122 | 132 | 30×2 | 2.0 |
| 20 | 110 | 28 | 18 | 220 | 156 | 166 | 36×2 | 3.5 |
| 25 | 140 | 33 | 22 | 230 | 169 | 180 | 39×2 | 4.3 |
