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API6D Standard Cryogenic Valve

Basic Information
Place of Origin: CHINA
Brand Name: coosai
Certification: API6D, ISO 9001
Model Number: Q41,47F/Y, Z40Y, H76Y
Minimum Order Quantity: 1SET
Packaging Details: PLYWOOD CASE
Detail Information
Material: Ss 316 Structure: Ball,Gate,Cryogenic Ball Valve
Standard Or Nonstandard: Standard Power: Manual,Hydraulic,pneumatic,electric,gear Operator
Application: General,Corrosive Fluid,cryogenic Status,gas Connection: Flange,Welded
Standard: API,DIN,RJT,BS 5351 Valve Type: Cryogenic Valve
Pressure: Medium Pressure,High Pressure,Low Pressure
High Light:

API6D Standard Cryogenic Valve


DN6 Cryogenic Valve


DN600 cryogenic control valves

Product Description




Technical Summary


Szie Range: 1/4"~24"(DN6~DN600)


Series in Range: Standard bore, reduced bore; Ball valve, Gate valve, Check Valve, Globe valve, Etc.


Application: Air separation plants, LNG storage and distribution, LNG Transportation, Liquid and Gaseous Oxygen for steel production, Etc.


Pressure Range: 150LB ~ 2500LB, PN10~PN64


Temperature Range: -196 Deg C


Material: Austenitic Stainless steel, ASTM A351, ASTM A182, Etc.


End Connections: RF, RTJ. FF, Butt Welded, Extended Butt Welded, Etc.


Standards: API 6D, API 607 for fire safe design, API600 / API603 for Gate valve, BS 1873, BS1868, Etc.


Operation: Lever / Handwheel, or gear operated, Pneumatic or Electric Actuated. Etc.


Ball Valve Type Design and Manufacture Face to Face/End to End Flange Dimensions Pressure Temperature Rating Inspection and Test
Split Flange ball valve BS5351 ANSI B16.10 ANSI B16.5 ANSI B16.34 API6D
Fixed flange ball valve API6D/API608 API6D ANSI B16.47 ANSI B16.34 API598


Main Material

Body material Trim material Seal material Gasket/Packing


Cryogenic Definition:

 Low-temperature parts into liquid nitrogen tank insulation a certain length of time, to reduce its due to temperature differences andmetallographic changes resulting from the deformation,which increases when the low-temperature valve sealing performance of a processing method.

Austenitic stainless steel in Martensitic transition temperature, part of austenite into martensite changes causing the resulting volume parts deformation is an important reason for the valve sealing surface leakage. Moreover, as the temperature decreases parts produces shrink and thermal stress caused by the valve irregular parts of deformation caused by low leakage is also one of the reasons. To this end, before finishing of parts (e.g. sealing surface grinding) on main parts such as: the valve body, valve covers, plate (disc), the valve stem fasteners such as below the operating temperature of cryogenic treatment.

As a general rule, use of the valve below 101C, before finishing the main part for cryogenic. But if the user requires, above-101.C working temperature valve parts for cryogenic.

Cryogenic method: soak the parts to be processed into liquid nitrogen tank for cooling, when parts of 196 degrees centigrade temperature reaches-, start insulation 1 ~ 2 hours, then remove the carton natural treatment to room temperature, repeat cycle twice.



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Contact Details

Phone Number : +8613017861943