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 Valve
|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
|6||Hanger Pin||Stainless Steel|
|8||Cover Gasket||Graphite with Soft steel|
Dimensions of check valve
The producing department of Check Valve
The package of Check Valve
- Q:How much is the check valve for the concrete pump?
- 31 concrete pump price ranging from 15W to 60W, different configurations have different prices, which one do you want?
- Q:How much pressure is the check valve h47x-10q?
- Check valve h47x-10q is 1.0MPa pressureAccording to the provisions of the JB/T 308-2004 valve type programming method:H== check valve4== connection: flange7== structure: butterfly typeX== sealing surface material: Rubber10== pressure rating: 1.0MPaQ== body material: ductile iron
- Q:Should the flue check valve be made by the civil team or the installation team?
- Internal construction, check the inner ring outside the cement glue installed
- Q:Check valve does not automatically check back, how to adjust?
- 4 the vertical lift check valve shall be mounted on a vertical pipe.5, the lift type horizontal check valve shall be installed on the horizontal pipe.6. Do not check the weight of the valve in the line. The large check valve shall be independently supported so as not to be affected by the pressure caused by the piping system.
- Q:What is the structure of the check valve of the screw air compressor?
- Work process: air pre filter, and then through the air filter and the air inlet controller into the mixing chamber and the compression screw lubricating oil, continuous linear by asymmetric rotor two, compression. The compressed oil and gas mixture enters the tank and the separation system for three levels of separation (centrifugal, self weight, and fine separation). The separated compressed air is discharged after the cooler is cooled, and a reliable pressure switch system controls the exhaust pressure. When the machine is running, the screw compressor run oil system by pressure difference automatic circulation, without pump. When starting, the minimum pressure valve is closed to ensure the minimum pressure required for the lubrication oil circulation. In addition to lubrication, the oil also acts as sealing, cooling and reducing noise. High efficiency oil and gas separator and high efficiency cooler ensure high quality compressed air.
- Q:How does the check valve work?
- In order to ensure that the valve can reach the appropriate position of the seat surface at any time, the disc is designed in the hinge mechanism so that the disc has enough swing space to make the disc real and comprehensive contact with the valve seat. The disc can be made of either metal or leather, rubber, or synthetic coverage, depending on performance requirements. The swing check valve is almost completely open and the fluid pressure is almost unimpeded, so the pressure drop through the valve is relatively small. The check valve of the lift check valve is located on the valve seat sealing surface of the valve body. In addition to this valve disc is free to lift, like the rest of the cut-off valve, the fluid pressure valve from the valve seat sealing surface lift, medium return led down to the valve seat, and cut off the flow. Depending on the service conditions, the disc can be of all metal construction or in the form of a rubber pad or rubber ring on the valve frame. The same as the cut-off valve, lift check valve fluid through the channel is narrow, so the check valve by lifting the pressure drop than the swing check valve a little bigger, and swing check valve flow restrictions very little,
- Q:What does the swing check valve "h44h-16" mean?
- Swing check valve with the built-in rocker swing structure, all opening and closing parts are arranged in the valve body of the valve, the valve does not penetrate, in addition to the seal gasket and seal ring with flange, overall no leak, to prevent leakage of the valve may be. Swing check valve rocker and disc connections using spherical connection structure, so that the valve in the 360 degrees within a certain degree of freedom, there is appropriate micro position compensation.
- Q:Should the pressure gauge be mounted before or after the check valve at the back of the pump?
- If the pressure gauge is installed before the check valve, the normal pressure will be displayed only when the pump is running. The pressure value displayed at the pump is not consistent with the actual pressure of the pipe.
- Q:What are the features of axial check valves?
- Axial flow check valve (GB/T 21387-2008) by the standardization of the national valve technical committee (SAC/TC 188). The drafting unit: Shanghai Huatong Valve Co., Ltd., Ningbo aimeike copper valve valve Co. Ltd. Shanghai zhengfeng. Main drafters: Zhang Yonghui, Liu Tienan, Zheng Xuezhen, Chen Tiewang, Meng Aimin. By the national standardization valve technical committee is responsible for the interpretation.TitleAxial flow check valveAuthorState Administration of quality supervision, inspection and Quarantine of the People's Republic of China, China National Standardization AdministrationPublication dateMay 1, 2008LanguagesSimplified ChineseISBNOne hundred and fifty-five billion sixty-six million one hundred and thirty-one thousand two hundred and fiftyForeign nameAxial Flow Check ValvePressChina Standard PressThe number of pagesPage 6FolioSixteenBrandBeijing Jinsong Jian Da Science and technology books Co., Ltd.Axial check valve (GB/T 21387-2008) was published by China standard press.
- Q:Check valve in the water pump when the sound of vibration is very large, what is the matter?
- For the gas wall boiler heating system, the water from the water booster pump mouth must be installed on the gate for gas wall boiler heating system, water plus appropriate pressure to turn off the gas wall furnace, built in water supply valve, heating system, water flow
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