Flange Swing Low Temperature Check Valve
manufacturer: Shanghai MeiYan Yi Pump & Valve Co., Ltd.
E-mail: sales@1bengfa.com
Tel: +86 (21) 5640 2009
Mob: +86 138 1691 3072（WeChat Same Account）
product drawing
Flange swing low temperature check valves
Dimensions & constructral diagram
Flange swing low temperature check valve constructral diagram
Implement standard
| item | design and manufacture | face to face dimension | flange standard | inspection and test |
| standard | API 600 | ANSI B16.10 | ANSI B16.5 | API 598 |
The materials of main parts
| part name | body,bonnet, disc,stem | pin,nut | double-head nut | sealing surface | packing |
| materials | A352-LCB、A352-LC3、A351-CF8 | A182-F304 | Cr-Mo steel | cobalt-based alloy | PTFE |
Main performance and specifications
| type | nominal pressure PN（Lb） | normal temperature test pressure | low temperature test pressure（MPa） | working temperature and applicable medium | |||
| shell | sealing | ||||||
| DH44Y-150（Lb） | 150 | 3.0 | 0.6 | 0.6 | -46℃，Ammonia, liquid nitrogen, propane | -101℃ ethylene, carbon dioxide | -196℃ methane, liquefied natural gas |
| DH44Y-300（Lb） | 300 | 7.5 | 0.6 | 0.6 | |||
| DH44Y-600（Lb） | 600 | 15.0 | 0.6 | 0.6 | |||
Main external and connection dimensions
| \nominal diameter NPS | in | 11/2 | 2 | 21/2 | 3 | 4 | 6 | 8 | 10 | 12 | 14 |
| mm | 40 | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | |
| DH44Y-150Lb | |||||||||||
| L | 165 | 203 | 216 | 241 | 292 | 356 | 495 | 622 | 698 | 787 | |
| H | 154 | 175 | 177 | 191 | 222 | 325 | 383 | 448 | 540 | 560 | |
| Kg | 14 | 18 | 22 | 30 | 46 | 82 | 116 | 158 | 238 | ||
| DH44Y-300Lb | |||||||||||
| L | 241 | 267 | 292 | 318 | 356 | 445 | 533 | 622 | 711 | ||
| H | 172 | 198 | 204 | 222 | 277 | 346 | 412 | 465 | 562 | ||
| Kg | 18 | 26 | 34 | 45 | 64 | 105 | 167 | 272 | 375 | ||
