Colloidal silica vertical check valve

DN：DN15~DN50

Stand：GB/T 12224

Api standard colloidal silica swing check valve

DN：DN15~DN25

Stand：API 6D

Cast steel check valve

DN：NPS2"~NPS60"

Class：Class150~Class2500

Stand：BS1868, API 594, API 6D

Forged steel check valve

DN：NPS1/2 "NPS2??

Class：PN150 Class2500

Stand：API 602ASME B16.34

Pressure seal bonnet check valve

DN：NPS2"~NPS36"

Class：Class600~Class2500

Stand：ASME B16.34"

Dual plate swing check valve

DN：NPS2"~NPS48"

Class：Class150~Class2500

Stand：API 594"

Hydrogen check valve

DN：NPS1/2"~NPS20"

Class：Class150~Class2500

Stand：API 602, ASME B16.34"

Micro-resistance slow-closure check valve

DN：DN100~DN2800

Class：PN10~PN40

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

Check valves

DN：DN50~DN600

Class：PN16~PN420

Stand：

H44 check valve

DN：DN25~400

Class：PN1.0~1.6

Stand：GB/T 12236

H42 check valve

DN：DN15~350

Class：PN1.0~1.6MPa

Stand：GB/T 12224

H41 check valve

DN：DN15~450

Class：PN1.0~1.6MPa

Stand：GB/T 12236

H74 check valve

Stand：

H76 check valve

Stand：

Fluorine lined clamp swing check valve

Stand：

Jis check valve

DN：NPS40A~200A

Class：40K

Stand：JIS B2071

Fluorine lining check valve

DN：DN15~250

Class：PN6~25

Stand：GB/T 12235、GB/T 12236

Fluorine lining check valve

DN：DN15~250

Class：PN6~25

Stand：GB/T 12235、GB/T 12236

Fluorine lined check valve

DN：DN15~250

Class：PN6~25

Stand：GB/T 12235、GB/T 12236

Fluorine lined butterfly check valve

Stand：