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Cf8 / Cf3 Cryogenic Check Valve Straight Through Check Valve

Cf8 / Cf3 Cryogenic Check Valve Straight Through Check Valve

industrial check valve

high pressure check valve

Cf3 Cryogenic Check Valve

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Product Details
Stainless Steel
PN1.6 To 6.4MPa
Temperature Of Media:
Low Temperature
Port Size:
Payment & Shipping Terms
Minimum Order Quantity
Packaging Details
Inner package:plastic bag sealed package Outer package:carton package or wooden case package The lettering, nameplate, certificate for valves are available
Delivery Time
5-8 DAYS
Payment Terms
T/T, L/C, D/A,
Supply Ability
Product Description

Cf8 / Cf3 Cryogenic Check Valve Straight Through Butterfly Check Valve


Good quality OEM CF8/CF3 DN10 to DN250 cryogenic check valve for LNG


Cryogenic check valve is a check valve that slides along the vertical centerline of the valve body. The internally threaded check valve can only be installed on horizontal pipelines. On high-pressure small-diameter check valves, the ball can be a ball. The body shape of butterfly check valve is the same as that of globe valve (can be used with globe valve), so its fluid resistance coefficient is large. Its structure is similar to a globe valve, with the same body and disc as the globe valve. The upper part of the valve disc and the lower part of the valve cover are processed with a guide sleeve. The valve disc guide can be freely raised and lowered in the valve guide. When the medium flows, the valve disc is opened by the thrust of the medium. When the medium stops flowing, the valve disc is closed by itself. Falling down on the valve seat, it plays a role in preventing the medium from flowing backward. The direction of the medium inlet and outlet channels of the straight-through butterfly check valve is perpendicular to the direction of the valve seat channel; the vertical lift check valve has the same direction of medium inlet and outlet channels as the valve seat channel, and its flow resistance is smaller than that of the straight type.



Structure description

During the use of this valve, the medium flows in the direction of the arrow shown in the figure.

1. When the medium flows in the prescribed direction, the valve disc is opened by the force of the medium; when the medium is flowing backward, the valve disc is tightly sealed with the valve seat due to the weight of the valve disc and the reverse force of the medium Closed together to achieve the purpose of preventing the medium from flowing back.


2. The sealing surfaces of the valve body and disc are made of stainless steel.


3. The structural length of this valve is in accordance with GB12221-1989, and the flange connection size is in accordance with JB / T79-1994.




cryogenic-check-valve-1-1.jpg Valve Type:Check Valve
Connection Type: Welding
Nominal Diameter:DN10mm~DN100mm
Nominal Pressure:PN40.0MPa
Material: Valve Body:CF8;
Valve Disc:06Cr19Ni10; Valve Stem :06Cr19Ni10;
Stuffing:PTFE; Disc Sealing:PCTFE
Suitable Medium:LO2,LN2,LAr,LNG,etc
Design and Manufacture:Conform to GB/T24925-2010
Testing:Conform to GB/T13927-2008

Valve Lifetime:Specified according to usage frequency

and installation location

Lead Time:Customized valves are usually 30~45 days; Stock valves are usually within 5 days.



Customer Notice:

1. If customers have special requirements for products, they must provide the following instructions in the order contract:
a. Structure length
b. Connection Type;
c. Nominal diameter
d. Product use medium and temperature and pressure range;
e. Testing, inspection standards and other requirements.


2. The factory can configure various driving devices according to customer specific requirements.

3. If the determined valve type and model are provided by the customer, the customer should correctly explain the meaning and requirements of its model, and sign the contract on the condition that the supply and demand sides understand and agree.

4. For futures and ordering customers, please call the letter to tell the valve model, specifications, quantity, delivery time and place in detail. And advance payment of 30% of the total contract amount, the supplier is ready for production.

Valves Display


Cf8 / Cf3 Cryogenic Check Valve Straight Through Check Valve 1



Valve Application





Valve Package



Company Information

Si Chuan Liangchuan Mechanical Equipment Co.,Ltd is a high-tech company specializing in the production of many kinds of valves,especially cryogenic valves.The main products are cryogenic valves,gate valves,globe valves,ball valves,butterfly valves, check valves,safety valves,etc.Our company has many national technology patents.And our company has established and improved the special equipment manufacturing management system and ISO 9001 international quality system and passed the certifications.In 2015,we have passed the certification of High Technology Enterprise.Liangchuan has established a strict and complete test organization, in order to ensure that the product quality is in line with relevant national standards,industry standards and corporation standards.




Notes When Use

1. It should ensure that the pipe is blown clean before installation.

2. When installing, make sure that the flow direction indicated by the arrow on the valve body should be consistent with the flow direction of the fluid.

3. This valve has been degreased. Store and keep clean when installing.

4. After the pipeline construction is completed, all the valves on the pipeline should be opened, and the residue in the pipeline should be thoroughly and thoroughly kept to ensure that the pipeline system is clean and free of debris.

5. The installation system diagram with the oil-free requirements should be degreased.

6. Slowly open and close during use.

7. If the precision parts such as the valve disc, valve seat and valve stem are worn or damaged, it must be repaired and replaced in time.

8. For parts such as gaskets and sealing materials, replace them with new ones each time.

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