Product Description:
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 Valves
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
| Size | DN40-DN600 |
| Face to Face | DIN 3202 F6 |
| Flange Drilling | EN 1092-2 PN16 |
| Inspection and Test | ISO 5208 |
﹡For all available general design, face to face standard and flange drilling,please kindly contact CNBM directly.
Materials of Parts
| Parts | Description | Material |
| 1 | Body | GG25 |
| 2 | Seat Ring | Brass |
| 3 | Disc Ring | Brass/EPDM |
| 4 | Disc | GG25 |
| 5 | Hanger | GGG50 |
| 6 | Hanger Pin | Stainless Steel |
| 8 | Cover Gasket | Graphite with Soft steel |
| 9 | Cover | GG25 |
﹡For other material request,please kindly contact CNBM directly.
Dimensions of Check Valves
| Size(DN) | L | D | D1 | D2 | b | n-d | H | W.T(kg) |
| 40 | 180 | 150 | 110 | 84 | 18 | 4-19 | 110 | 9 |
| 50 | 200 | 165 | 125 | 99 | 20 | 4-19 | 130 | 13.4 |
| 65 | 240 | 185 | 145 | 118 | 20 | 4-19 | 140 | 17.7 |
| 80 | 260 | 200 | 160 | 132 | 22 | 8-19 | 150 | 20.8 |
| 100 | 300 | 220 | 180 | 156 | 24 | 8-19 | 160 | 29.3 |
| 125 | 350 | 250 | 210 | 184 | 26 | 8-19 | 190 | 47 |
| 150 | 400 | 285 | 240 | 211 | 26 | 8-23 | 210 | 67 |
| 200 | 500 | 340 | 295 | 266 | 30 | 12-23 | 250 | 118.7 |
| 250 | 600 | 405 | 355 | 319 | 32 | 12-28 | 310 | 171.9 |
| 300 | 700 | 460 | 410 | 370 | 32 | 12-28 | 340 | 232.5 |
| 350 | 800 | 520 | 470 | 429 | 36 | 16-28 | 450 | 330 |
| 400 | 900 | 580 | 525 | 480 | 38 | 16-31 | 520 | 460 |
| 450 | 100 | 640 | 585 | 548 | 40 | 20-31 | 550 | 580 |
| 500 | 1100 | 715 | 650 | 609 | 42 | 20-34 | 590 | 700 |
| 600 | 1300 | 840 | 770 | 720 | 48 | 20-37 | 680 | 780 |
- Q:What are the differences between different check valves applications?
- The application performance of the acoustic check valve only allows the medium to flow in one direction, and prevents flow in the direction. Usually the valve is automatically work, fluid pressure flow in one direction, the valve open; the opposite direction of fluid flow by gravity, fluid pressure and valve closing effect on the valve seat, thereby cutting off flow. Not suitable for medium containing solid particles and viscosity. The design of the check valve takes full account of the requirements of the use of the environment, and uses the inclined plate structure to achieve no vibration, no noise, stable operation, and ensure the quiet environment of the hotel and the residential environment, and has the effect of energy saving.
- Q:What are the main types of check valves?
- Check valve structure of the main drop type, DL swing and butterfly, JB/T308 provides the structure code.
- Q:What are the brands of check valves?
- The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium.
- Q:Is the hdf41x 1.6Mpa a check valve?
- The backflow preventer consists of low pressure backflow prevention device and vacuum type backflow prevention device two, according to the national standard of low pressure backflow prevention device of head loss is less than 3 meters, decompression type backflow prevention device of head loss is less than 7 meters.
- Q:What's the difference between the check valve and the stop valve?
- Check valves are used to automatically stop liquid backflow,Stop valve is used in the pipeline to cut off the liquid feed, manual or motorized valve.
- Q:Are check and check valves the same kind of thing?
- Yes, that's right. Ha-ha。 My friend needs an anti - stop valve to find me. I have one for sale here.
- Q:Fire hood fire check valve okay?
- The utility model relates to a fire fighting check valve for a range hood, which belongs to an innovative product and can be used.
- Q:Can the swing check valve stand upright?
- Swing check valve, vertical mount, horizontal loading can be.Ordinary lift check valves shall not be erected. Lift check valves with springs can also be mounted.
- Q:What can I do with the lift check valve?
- With the structure of short length, small volume and light weight, the valve closed fast, water hammer pressure, flow smooth, fluid resistance small, horizontal or vertical pipe pipe can be used, easy installation, quick action, good sealing performance, the valve stroke is short, close the valve impact force is small, simple and compact, beautiful appearance, service life long, high reliability, to prevent the media back, the characteristics of automatic control. A lift check valve is used on an industrial pipe to prevent the flow of a medium.
- Q:Do you still need to check valve fittings for solar water heater installation?
- Need, the solenoid valve automatically control itself has the function of manual water valve was the installation of the installation, but now a lot of pressure to see you still go not installed, they save cost, but will give users the trouble
We are one of the largest enterprises in China, integrating research, development, production, marketing and commercial services of stationery.And it became the largest manufacture of the writing instruments in Asia, with the scale of production ranked the first in the consecutive 12 years in China, and the sales ranked the third in the global industy, and the strength ranked within the eighth.
1. Manufacturer Overview |
| Location |
Beijing,China |
| Year Established |
1986 |
| Annual Output Value |
Above US$100 Million |
| Main Markets |
Africa, Asia, America, Europe, Middle East, West Europe |
| Company Certifications |
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2. Manufacturer Certificates |
| a) Certification Name |
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| Range |
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| Reference |
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| Validity Period |
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3. Manufacturer Capability |
| a)Trade Capacity |
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| Nearest Port |
Beijing |
| Export Percentage |
41% - 50% |
| No.of Employees in Trade Department |
498 People |
| Language Spoken: |
English,Chinese |
| b)Factory Information |
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| Factory Size: |
42000 square meters |
| No. of Production Lines |
Above 20 |
| Contract Manufacturing |
OEM Service Offered；Design Service Offered |
| Product Price Range |
Average |
