• BFEA Best Selling Check Valve System 1
  • BFEA Best Selling Check Valve System 2
  • BFEA Best Selling Check Valve System 3
BFEA Best Selling Check Valve

BFEA Best Selling Check Valve

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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

Check ValveSize 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 direct 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

The producting deparment of check valve

 

 Check Valve

The Application of check valve

 Check Valve

The package of Check Valve 

 Check Valve

Q:The difference between check valve and check valve
1, one-way valve: is a typical seat valve, one-way valve Check, Valve, also known as check valve or check valve. Used in hydraulic systems to prevent reverse flow of oil flow. There are two one-way valve one-way and right angle type. Straight through one-way valves are threaded and installed on the pipe line. The right angle one-way valve has threaded connections, plate connection and flange connection in three forms. Liquid control check valve, also known as blocking valve or pressure valve, which is the same as one-way valve, used to prevent reverse flow of oil. But in the hydraulic circuit needs the oil flow reverse flow, but also can use the control oil pressure, opens the one-way valve, causes the oil flow to be possible to flow in two directions. The hydraulic control check valve adopts a conical valve core, so the sealing performance is good. When the closed oil circuit is required, the valve can be used as the one-way locking of the oil circuit to maintain the pressure. Liquid control check valves control the leakage of oil, there are two types of internal and external leakage. In the oil flow reverse outlet, no back pressure in the oil pipeline can be used to vent type; otherwise, need to leak type, in order to reduce the control oil pressure2, check valve is only one kind of valve, it can be said that one-way valve is a kind of check valve,
Q:What is the function of the check valve on the air compressor?
Check valve is also called one-way valve, air will not go in only, can protect the air compressor host, if the air compressor main machine does not stop, you can not check valveIf it starts frequently, it must be loadedCheck valve bad consequences: motor overload, burn the host top off
Q:What is the material of H41W-16's check valve?
According to: JB/T 308-2004 "valve type programming method"H check valve4 flange connection1 lift through straight through valve passageW sealing cover for body material16 nominal pressure PN16When the nominal pressure is less than or equal to PN16, do not mark the material code of the valve body, the valve body material is gray iron
Q:Where can I find the good check valve?
If the soft seal check valve, or buy Tianjin Hengyuan valve, good quality, moderate price, have the shelf life.
Q:How to control the common flue return and smoke return?
In the hood outlet to install a reasonable design, shut tight, open the hood in place, can be easily wind blown open, will not be open to the flue suction, and the blade contact area is very small, and a sealing ring, not to hinder the blade opening exhaust flue check valve closed Miller beauty you can eliminate the smoke intrusion and poor smoke.
Q:Is it necessary to install a check valve in the piston refrigeration compressor?
To solve this problem, we first need to know the working cycle of the piston compressor:1, compression process, suction valve closed, refrigerant gas in the cylinder from low pressure to high pressure process;2 the exhaust process, compression end, from the cylinder through the exhaust valve to exhaust pipe process;3, expansion process, exhaust end, exhaust valve closed, the piston from the bottom of the cylinder moving to the top of the cylinder process;4 suction process, suction valve opens, low-pressure refrigerant gas inhalation process of the cylinder;From the above piston engines don't seem to need what steps to open check valve. Because the suction valve and exhaust valve on the cylinder are constantly switching each other, the piston machine continues to inhale and exhaust the process. If only from the piston machine, there is no need to install a check valve.But to consider the whole refrigeration system, rather than a simple piston compressor, when the piston of more than 2 units must be horizontal pipeline in a single compressor exhaust pipe to the exhaust duct installed on the check valve and pipe installation is about
Q:Why can't parallel check valve be installed firmly?Anonymous browsing | 51 times
The vertical installation is easy to cause the valve core of the check valve to clamp off or fall off, and lose the function of checking back. The direction of the check valve is restricted seriously from any direction of the medium
Q:What does the check valve "h61h-25 H" mean?
From the model analysis, for the cast steel welding lift check valve, it depends on your valve is not it
Q:Why can't the check valve on the air pipe be used when the wind speed is less than 8 meters?
First of all, you must understand the working principle of the check valve, indeed, as you said, you can adjust the position of the hammer by adjusting the position of the drop hammer.If you are in their own design and production, consider the thickness of the blade, drop hammer size, weight, and other parameters considered.Hope to be of help to you!
Q:Is the check valve behind or behind the gate valve? Why?
Thank youPlease install it in frontWhat about the front?
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

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Beijing
Export Percentage 41% - 50%
No.of Employees in Trade Department 498 People
Language Spoken: English,Chinese
b)Factory Information  
Factory Size: 42000 square meters
No. of Production Lines Above 20
Contract Manufacturing OEM Service Offered;Design Service Offered
Product Price Range Average

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