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Cast-steel lifting check valve

DN：NPS2"~24"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Forged-steel pressure seal check valve

DN：NPS2"~36"

Class：Class600~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Cast-steel swing check valve

DN：NPS2"~60"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Axial check valve

DN：NPS2"~24"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Tilting-disc check valve

DN：NPS2"~60"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Hammer slowly-closing check valve

DN：NPS2"~60"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Cast-steel dual-plate check valve

DN：NPS2"~60"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Oxygen check valve

DN：NPS1/2"~40"

Class：Class150~900

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
American standard stainless steel check valve

DN：NPS6"~24"

Class：Class600

Stand：API 600

CHINA LIANGGU GROUP CO.,LTD
Oxygen check valve

DN：NPS1/2"~20"

Class：Class150~900

Stand：GB

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Forged-steel lifting check valve

DN：NPS1/2"~4"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Power station check valve

DN：NPS1/2"~12"

Class：Class150~2500

Stand：API 6D

HAOGONG VALVE CO., LTD.
Power plant check valve

DN：DN50~500

Class：PN15.0

Stand：GB

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Full forging block valve (f91)

DN：DN350

Class：PN10.0

Stand：GB

SHANGHAI POWER PLANT VALVE FACTORY CO.,LTD
Quick exhaust check valve

DN：DN1100

Class：PN10.0

Stand：GB

SHANGHAI POWER PLANT VALVE FACTORY CO.,LTD
Cryogenic check valve

DN：NPS2"~48"

Class：Class150~2500

Stand：API

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Hydrogen check valve

DN：DN250

Class：Class150~2500

Stand：GB

OUTONG GROUP ZHEJIANG PETROCHEMICAL VALVE CO., LTD
Swing check valve

DN：DN15~100

Class：PN0.6~1.6

Stand：GB

CHINESE - DIANJIAN VALVE CO. LTD.
Lift check valve

DN：DN8~150

Class：PN0.6~1.6

Stand：GB

CHINESE - DIANJIAN VALVE CO. LTD.
Double-lobe check valve

DN：DN15~350

Class：PN0.6~1.6

Stand：GB

CHINESE - DIANJIAN VALVE CO. LTD.
Vertical check valve

DN：DN125

Class：PN0.6~1.6

Stand：GB

CHINESE - DIANJIAN VALVE CO. LTD.
Jis swing check valve

DN：DN65

Class：10K

Stand：JIS

ZHEJIANG XINXU VALVE INDUSTRY CO.,LTD.
Jis wafer check valve

DN：DN80

Class：10K

Stand：JIS

ZHEJIANG XINXU VALVE INDUSTRY CO.,LTD.
Vertical flange check valve

DN：DN125

Class：PN1.0

Stand：GB

SUYAN VALVE MECHINERY
Wafer-type check valves

DN：NPS14"

Class：Class1500

Stand：API

SUYAN VALVE MECHINERY
Wafer-type single-plate check valve(super-thin)

DN：DN15~350

Class：PN0.6~1.6

Stand：GB

SUYAN VALVE MECHINERY
Wafer-type check valves

DN：DN40

Class：PN0.6~1.6

Stand：GB

SUYAN VALVE MECHINERY
Stands lie dual-purpose loudspeaker mute check valves

DN：DN50

Class：PN1.6

Stand：GB

SUYAN VALVE MECHINERY
Low resistance dashpot check valves

DN：DN200

Class：PN1.6

Stand：GB

SUYAN VALVE MECHINERY
Noise elimination check valves

DN：DN150

Class：PN1.6

Stand：GB

SUYAN VALVE MECHINERY

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