vacuum bellows
Professional Supplier
14 years of experience in the vacuum bellows industry.
vacuum bellows
Vacuum bellows is a kind of metal bellows that can be used in vacuum pipeline systems, which is different from common positive pressure bellows. It inherits the advantages of flexible bellows such as flexibility, expansion and eccentric compensation. According to different molding methods, vacuum bellows can be divided into two types: hydraulically formed bellows and edge welded bellows. Here we focus on the hydraulically formed bellows.
- Size: DN6 to DN500
- Material: 304, 321, 316L Stainless Steel
- Types: KF(NW), ISO, CF
- Length: up to 4,000 mm
- Wall Thickness: 0.12 ~ 0.4 mm
- Temperature: -196 ~ 450 °C
- Helium leak rate: 1×10-9 Pa·m3/s
- Typical lead time: 3 days
- MOQ: 1 PC
From $9.00*
high flexibility
Hydroformed vacuum bellows hose is much more flexible and lighter than the rubber expansion formed corrugated metal hose.
bright surface
Our vacuum bellows use BA (Bright annealed) surface finish stainless steel, which is brighter than ordinary stainless steel.
Automatic welding
Use welding machines imported from Japan for automatic welding. Welds are free of oxidation and are more resistant to corrosion.
vacuum bellows types
kF Bellows
Both ends are connected by KF flange, easy to install and disassemble. It is the most widely used type of vacuum bellows.
ISO Bellows
One type is an ISO bolt hole flange with bolt holes and the other is a caliper flange attached with caliper screws
CF Bellows
Both ends are ConFlat flanged and fixed by bolts. The flange on one side can be rotated.
edge welded bellows
Compared to formed metal bellows, it has a larger stroke length and a more precise spring rate.
* Lengths can be customized up to 4000 mm according to customer's requirement.
vacuum level
Vacuum pressure ranges from rough vacuum to extreme high vacuum.
Contact our technical team
to support your projects.
our advantages
Hydroformed bellows
Our vacuum bellows are constructed from ultra-thin wall stainless steel hydroformed bellows and equipped with vacuum flanges at both ends, using stainless steel 304 or 316L as the primary materials. Vacuum bellows not only preserve the exceptional flexibility of metal hoses but also facilitate effortless expansion and contraction. In essence, our vacuum bellows are designed to withstand substantial bending, expansion, and contraction, as well as eccentric motion.
CNC machining
Utilizing advanced CNC machine tools, vacuum fittings undergo precise processing, ensuring exact dimensions and an aesthetically pleasing appearance. High-quality stainless steel serves as the raw material for these vacuum fittings, guaranteeing no deformation after high-temperature welding, thereby preventing any leakage in high vacuum.
automatic welding
Utilizing advanced Japanese welding equipment, the final assembly welding of vacuum bellows achieves full penetration automatic welding. The welded surface is impeccably smooth, devoid of any oxidation. The vacuum flange remains undistorted after welding, ensuring the seamless functioning of the vacuum bellows in high vacuum settings.
braid
cover
A braid cover prevents potential damage to the inside vacuum bellows from external environments while also enhancing the bellows assembly’s pressure-bearing capacity.
Comprehensive Size Range
The coordinated use of multiple bellows forming machines provides us with the widest range of size production capabilities. From DN6 to DN500, we can supply any size you need.
KF Bellows Sizes
ISO Bellows Sizes
CF Bellows Sizes
helium leak testing
We have invested in advanced and expensive helium leak detectors to perform 100% testing on all vacuum bellows. Whether your vacuum bellows are intended for rough vacuum or high and ultra-high vacuum (HUV) applications, our robust testing capabilities ensure that each product meets the highest standards.
At every stage of production, we conduct stringent quality inspections through multiple rigorous testing procedures, ensuring that every vacuum bellow you receive has undergone thorough quality control. These strict testing processes guarantee the reliability and durability of our vacuum bellows.
helium leak rate conversion
Reference:
https://www.helium-leak.eu/calculations-and-units/
https://www.convert-measurement-units.com/convert+Pa+m3+s+to+mbar+l+s.php
vacuum flange
KF flange
ISO flange
CF flange
About Kipflex
Kipflex has an experienced production technical team. In the past ten years, it has been conducting continuous research on corrugated pipes and has formed a complete scientific management system.
Kipflex strictly implements the national standards of the People’s Republic of China “GB/T14525-2010” and “JB/T6169-2006”, and refers to the “EJMA” standard of the American Expansion Joint Manufacturers Association and the technical parameters of Japan, Germany, and other countries.
Frequently Asked Questions
With 15 years of experience in this industry, our commitment remains steadfast toward its continual development.
The theoretical definition of vacuum is a volume without any matter inside it. In a general sense, a vacuum is any state of space that is below normal atmospheric pressure.
Contact our technical team
to support your projects.
We are proud to offer 24/7 service to all our customers.
