Notice:The original Zhejiang Chaoda valve Co., Ltd upgraded itself to Chaoda Valves Group Co., Ltd, that is the Chaoda Valves Group, and as Chaoda Group for short.


Cryogenic Ball Valves

Cryogenic Ball Valves

There are two types of cryogenic ball valves, i.e. floating and trunnion. For the product range, face to face dimension and flange dimension pls refer to the corresponding date of common floating ball valve and trunnion mounted ball valve. For valves with working temperature higher than minus 50℃, we seldom use long neck design. However, for valves with working temperature below minus 50℃, the length of valve neck shall be 250mm or decided by our design and calculation.

Type: DQ41W,DQ47W
Bore: NPS½~NPS10,DN15~DN250
Rating: Class150~Class900,PN16~PN100
Material: Carbon Steel,Stainless Steel,Alloy Steel,Duplex Stainless Steel
Operation: 手动,蜗轮蜗杆传动,电动,气动
Applicable: Oil,Chemical,Natural Gas,Petrochemical,Coal Chemical and so on

Honor:Zhejiang Famous Brand,Zhejiang Famous Exporting Brand,


Cryogenic Ball Valves product description

DQ41W type Cryogenic ball valves (Flanged general or butt-welding connection optional) developed by CHAODA are suitable for using on various kinds of pipeline from pressure Class 150 to Class 900, PN16 to PN160 to cut off or allow the flowing of medium. By using different material, the Cryogenic Ball Valves could be suitable for medium such as water, steam, oil, nitric acid, acetic acid, oxidizing substance, carbamide and etc. Manual/worm gear/pneumatic or electric actuators could be chosen by needs. 

Special cryogenical treatment would be done to the cryogenic ball valves. Rough machined valve part is treated in the cooling medium for 2-8 hours to emininate its stress and ensure its cryogenic property. The treated material with precise manufacturing dimension could realize the good sealing performance under cryogenic working situation.

The material of the valve is the most important for LNG medium. It may cause internal or external leakage of the valve if the material couldn't meet the standard. The valve component would be even fractured if the mechanical property(strength&rigidity)of the valve couldn't meet the needed requirement by the serving condition. We could choose material of LCB(minimum -46℃), LC3(minimum -101℃),CF8/SS304(minimum -196℃)

Cryogenic Ball Valves product features

     CHAODA Cryogenic Ball Valves has the features of Good sealing, reliable, safety and long life span. Cryogenic Ball valves developed by Chaoda have following good characteristics: good sealing performance, reliable safety guarantee, long life span and etc.

     CHAODA VALVES GROUP CO.,LTD. launched its quality management and safety system as ISO9001,ISO14001,OHSAS18001, API6D, CE/PED, API607,API6FA, ISO15848-1 TS and API 600.

Cryogenic Ball Valves standards

  Design and manufacture standards:API 6D, API 608, GB/T 12237, BS 6364, ASME B16.34

  Face to face dimensions standards:ASME B 16.10, GB/T 12221

  Flanged Ends standards:ASME B 16.5、GB/T 9112~9124、HG/T 20592、HG/T 20615、JB/T 74~90、JIS B2238

  Testing inspection standards:API 598, GB/T 13927, GB/T 26480, JB/T9092, ISO 5208, BS 6364, GB/T 24925

Cryogenic Ball Valves parts and material

Cryogenic Ball Valves main size and weight

How to Order:   

1.Clients could email us your enquiry including following information.