Place of Origin:
CHINA
Brand Name:
CNLN
Certification:
CE/ISO
Model Number:
CDH61F
Cf8 / Cf3 Cryogenic Check Valve Straight Through Butterfly Check Valve
Good quality OEM CF8/CF3 DN10 to DN250 cryogenic check valve for LNG
The cryogenic check valve is a check valve that slides along the vertical centerline of the valve body. Internal thread check valves can only be installed on horizontal pipelines. On high-pressure small-diameter check valves, the ball can be a ball. The body shape of the butterfly valve is the same as that of the globe valve (it can be used together with the globe valve), so its fluid resistance coefficient is relatively large.
Its structure is similar to that of a globe valve, and the valve body and disc are the same as those of a globe valve. The upper part of the valve disc and the lower part of the valve cover are processed with guide sleeves. The disc guide can be raised and lowered freely 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 disc will close itself. It falls on the valve seat to prevent the medium from flowing backward. The direction of the medium inlet and outlet passages of the straight-through butterfly check valve is perpendicular to the direction of the seat passage; the vertical lift check valve has the same medium inlet and outlet passage directions as the seat passage, and its flow resistance is smaller than that of the straight-line check valve. back.
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.
|
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.
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.
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.
Send your inquiry directly to us
