Check Valve Series

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Pressure Self-sealing Lift Check Valve

manufacturer: Shanghai Fengqi Industry Development Co., Ltd.
Eml: sales@fengqi.sh.cn

Tel: 86 (21) 3652 8716
Mob: (86) 138 1635 6498

product drawing

Pressure self-sealing lift check valves
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
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
Note:the other materials that required by customers can also be used. The sealing surface material matching is decided by customer specified inner parts codes. CS means carbon steel; AS means alloy steel; SS means stainless steel.

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
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