valve bellows
Professional Supplier
14 years of experience in the metal bellows industry.
valve bellows
The valve bellows here refers to a metal bellows used inside the valve. The valve bellows assembly is used to effectively isolate the flowing medium inside the valve from the external working environment. The valve bellows is connected to the valve stem by welding, forming an axially movable mechanical hard seal for the valve. Compared to traditional packing-sealed valves, bellows valves greatly reduce the probability of leakage. The valve bellows with good quality has become the key to improve the service life of the valve.
- Size: DN6 to DN250
- Material: 304, 321, 316L, 316Ti Stainless Steel
- Pressure: PN1.6 to PN14.0
- Temperature: -196 ~ 450 °C
- Typical lead time: 7 days
- Standard: JB/T 10507-2005
What we can supply
The main structure types
typical applications
Maximize Efficiency
with the Right Bellows
valve bellows materials
Bellows valves are commonly used in special applications such as petroleum, chemical, and nuclear power plants, thus placing higher demands on the materials of the valve bellows. Valve bellows are typically made of austenitic stainless steel and various high-temperature alloys. The selection of materials for valve bellows primarily considers factors such as the difficulty of bellows forming, weldability, working pressure, operating temperature, the corrosiveness of the flow medium, and wear.
valve bellows sizes
The valve bellows are installed inside the bellows valve as an assembly and are the key component to achieving zero leakage in bellows valves. The lower end of the valve bellows is connected to the valve stem, and the upper end is connected to the flange, providing a deformable axial seal for the bellows valve. The inside diameter of the valve bellows depends on the diameter of the valve stem, and the gap between them should be greater than 1.5 millimeters. The ratio of the outside diameter to the inside diameter of the bellows is generally between 1.3 and 1.5. When designing and procuring valve bellows, full consideration should be given to the space limitations within the valve body.
6 different inspection methods
our inspection methods
Visual inspection
Weld quality inspection
Dimensional inspection
Tightness test
Pressure resistance test
Cycle life test
export to the us since 2011.
why choose kipflex?
14 years of experience
Kipflex is a professional manufacturer of flex bellows since 2008. We supply metal bellows of various materials, among which stainless steel bellows is our main product. Most common stainless steel materials are available, such as 304, 321, 316L, 316Ti, and so on. Our bellows are widely used in the automotive exhaust, valve stem sealing, vacuum connections, industrial piping systems, and other applications.
High Quality Durability
We have a production team of hundreds of individuals who work hard to create high-quality items that are meant to last.
Durability is a top focus and our employees have been trained to ensure they know exactly what needs to be done to produce all of the products that we have available.
We take pride in our work and so does each and everyone of the employees within our production department.
- Brand: Kipflex
- Size: DN15 - 250
- Pressure: PN1.6 - 14.0
- Layers: 1 - 10
- Temperature: -196 °C to 300 °C
- Materials: 304, 316L, 316Ti
- Applications: globe valve, gate valve, control valve
- MOQ: 50 PCs each size
“Quality derives from design, manufacturing, prevention as well as long-term practice.”
strictly select
Strictly select raw material suppliers
We strictly select raw material suppliers, who are mainly from the first-tier distributors of the top five steel mills in China. High-quality and stable supply of raw materials ensures the stable quality of bellows.
Our advantages
- Advance design
- Multi-layer structure design
- Surfacing with cemented carbide
important things you should know
Questions And Answers
Our main sales market is the United States, and we also have many customers in Europe.
We welcome customer companies from all over the world to become our agents, we will give the greatest support according to the sales situation in your local market.
We have been in this market for 14 years and have always been focused on this industry.
We can provide samples or customize according to customer’s requirements.
Our average lead time is 10 to 15 days, much less than the 25 to 30 days of our competitors.
Most of our customers pay by wire transfer for their formal orders, you can contact our finance department if you need assistance.
We mainly sell bellows from 6 to 300 mm diameter, for products beyond this range, please contact our technical department for more professional advice.
By using fully automated bellows forming equipment, we can produce about 10,000 bellows per month. The production efficiency of a bellows assembly will be determined by its construction.
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Client Testimonials
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