Check Valves Check Valves
are used in pipes under pressure between Class 150~2500LB, working temperatures﹣196~600℃. They are used in industries including oil, chemistry, pharmaceutical, fertilizer, and power gene-ration to prevent the backward flux of the media.
Design Feature of Check Valve
1. The products feature a reasonable structure, reliable seal, good performance and nice modeling.
2. Either soft or hard seal can be selected for the product upon different working conditions. The sealing face is built up with Co-based carbide alloy, leaving a better wearability, corrosion and scrap resistance and a longer duration.
3. Small opening pressure, the disc can be opened fully with a very small pressure differential.
4. Inside-set bolt-bearing structure reduces leakage and reliable use.
5. Class≥1500LB, the middle cavity uses a self-tightening sealing structure to have the sealing performance reinforced along with the pressure rise so as to ensure the sealing performance.
6. Different parts materials and different sizes for flange, butt-welding are available for sensible combination according to different working facts and customers' requirement
Technical Data of Check Valves
|Face to Face
||DIN 3202 F6|
||EN 1092-2 PN16|
|Inspection and Test
﹡For all available general design, face to face standard and flange drilling,please kindly contact CNBM directly.
Materials of Parts
||Graphite with Soft steel|
﹡For other material request,please kindly contact CNBM direct Dimensions of Check Valves
The producting deparment of check valve
The Application of check valve
The package of Check Valve
- Q:40 how large check valves are installed in the water pipes?
- Crown valve press40 of the pipe outer diameter of 48 DN40 check valve on it
- Q:What is the difference between the check valve h64h-250 and the h61y-250?
- According to JB/T308-2004 "valve type programming method"One is the swing check valve (4), and the sealing surface is Cr13 (H)One is the lift check valve (1), and the sealing surface is made of Y
- Q:How do I install the pump outlet check valve?
- Installation of pump outlet check valves: swing check valves are generally mounted on horizontal pipes: for DN~80mm check valves, they can also be mounted on vertical or upward sloping pipes. The straight through lift check valve shall be installed on the horizontal pipe; the vertical lift check valve must be installed on the vertical pipe, and the medium shall be from bottom to top.
- Q:What is the difference between the H44H check valve and the H41 check valve?
- The large check valve shall be independently supported so as not to be affected by the pressure caused by the piping system2, attention should be paid to the direction of the flow of the medium should be in accordance with the direction of the body marked arrow3. Vertical lift check valves shall be mounted on vertical pipes4.
- Q:Check valve does not automatically check back, how to adjust?
- The non-return valve does not automatically check the cause:1, the valve at both ends of the road must be blocked, there is dry ventilated room. Such as long-term storage, should always check rust corrosion.2, the valve should be cleaned before installation and eliminate the defects during transportation.3, the installation must be carefully checked on the valve signs and nameplates are in line with the use of requirements.
- Q:Installation of stainless steel tank outlet must be equipped with check valve?
- Outlet?If the delivery is not waterIf the pump is pumped up, it should be loaded
- Q:What are the differences between the vertical check valve and the horizontal check valve?
- The structure principle is the same, but the cost and volume are different, there is nominal pressure difference, the use place is different
- Q:What is the reason that the check valve does not stop water?
- 7, when installing check valve, should pay special attention to medium flow direction, should make medium normal flow direction and the direction of the arrow on the valve body is consistent, otherwise it will cut off the normal flow of media. Valve should be installed at the bottom of the pump suction pipe.The general formula 8, lift check valve should be installed in horizontal pipe, vertical lift check valve and bottom valve is usually installed in a vertical pipe on the road, and the bottom-up flow of media.9, the check valve closes, will produce water hammer in pipeline pressure, will lead to serious damage to the valve and piping or equipment, especially for the big pipe or high pressure pipeline, it should pay attention to those who use check valve.
- Q:What does the check valve "H41F" mean?
- According to the provisions of the JB/T 308-2004 valve type programming method:H== check valve4== connection: flange type1== structure form: lifting typeF== sealing surface material: fluorine plastic
- Q:What is the purpose of installing a check valve in the air pipe before the fan?
- The fan before the wind pipe installed on the check valve to prevent the fan after the ceased operation outside of the wind because of the air pressure is blown indoors because of the inverse.
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1. Manufacturer Overview
|Annual Output Value
||Above US$100 Million
||Africa, Asia, America, Europe, Middle East, West Europe
2. Manufacturer Certificates
|a) Certification Name
3. Manufacturer Capability
||41% - 50%
|No.of Employees in Trade Department
||42000 square meters
|No. of Production Lines
||OEM Service Offered；Design Service Offered
|Product Price Range