Pressure Self-sealing Lift 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
Pressure self-sealing lift check valves
Structural mode
1. full diameter or reduced diameter
2. lift check valve
3. ball check valve
4. swing check valve
5. set spring inside according to requests
6. Bolt connection, spiral wound gasket sealed bonnet; thread connection, full welded sealing bonnet and the thread connection pressure self-tight bonnet
7. unitary upper sealing seat
8. the socket end is in line with ASME B16.11
9. the thread connection end is in line with ANSI/ASME B1.20.1
10. the disc can changed as throttle-type, needle-type,ball-type
The design and manufacture is in line with MSSP-118 and ASME B16.34。test and inspection is according to API 598， marks according to MSS-SP-25
Dimensions & constructral diagram
Pressure self-sealing lift check valve constructral diagram
Main materials
| No. | part name | CS to ASTM | AS to ASTM | SS to ASTM | |
| Type A 105N | Type F22 | Type F304(L) | Type F316(L) | ||
| 1 | body | A105N | A182 F22 | A182 F304(L) | A182 F316(L) |
| 2 | lift disc | A276 420 | A276 304 | A276 304(L) | A276 F316(L) |
| 3 | self-sealing seat | A105+STL | F22+STL | A182 F304(L) | F316(L) |
| 4 | sealing ring | A276 304L | A276 304L | A276 304L | A276 316L |
| 5 | bonnet | A105 | A182 F22 | A182 F304(L) | A182 F316(L) |
| 6 | lift nut | A194 2H | A194 4 | A194 8 | A194 8M |
| applicable medium | water,steam, oil,etc | water,steam,oil,etc | nitric acid, acetic acid, etc | ||
| suitable temperature | -29°C～425°C | -29°C～550°C | -29°C～200°C | ||
Main external dimensions（mm）
| NPS | 1/2″ | 3/4″ | 1″ | 11/4″ | 11/2″ | 2″ | |
| L | 900～1500Lb | 140 | 140 | 140 | 178 | 178 | 216 |
| 2500Lb | 186 | 186 | 186 | 232 | 232 | 279 | |
| H | 117 | 117 | 117 | 152 | 152 | 195 | |
| weight | 900～1500Lb | 7.5 | 7.0 | 6.8 | 18.5 | 18.1 | 20.3 |
| 2500Lb | 9.0 | 7.6 | 8.4 | 19.5 | 20.1 | 21.8 | |
