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: Flange |
| Nominal Diameter:DN10mm~DN25mm |
| Nominal Pressure:PN4.0MPa |
Material: Valve Body:CF8;
Valve Disc:06Cr19Ni10; Valve Stem :06Cr19Ni10;
Stuffing:PTFE; Disc Sealing:PCTFE |
| Suitable Medium:LO2,LN2,LAr,LNG,etc |
| Suitable Temparature:(-196℃~+80℃) |
| 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.
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.
