In detail
What it is made of
How it works
Metal bellows joint
The number that matters
Nominal pressure
16bar
The pressure class of the valve body at 20 °C. Working limits depend on the medium and its temperature.
Construction
Parts and materials
Applications
Media and industries
- Water
- Air
- Liquid Medium
- Heating Systems
- Irrigation Systems
- Ventilation Systems
Bellows expansion joints, also known as bellows expansion joints, are devices consisting of a flexible metal bellows capable of absorbing thermal expansion, compression, or angular deflection in pipelines and systems. They are used to compensate for axial, lateral, and angular movements, providing stability to the system amidst temperature and pressure fluctuations. Bellows expansion joints are typically made from specialized materials, often stainless steel, and find wide applications in various industries where compensating for thermal expansions and contractions is essential, preventing damage to pipelines and equipment.
Basic technical data and characteristics of bellows axial compensators DNOVA CB-3131-W
| Nominal diameter DN, mm | 50 - 300 |
| Working pressure PN, bar | 16 |
| Operating medium temperature t, °C | ≤550 |
|
Operating medium |
steam, oils, hot water, chemically aggressive media, within performance limits |
| Bellows material | stainless steel 304 |
| Nozzle material | stainless steel 304 |
| Axial travel, mm | 60 / 80 |
| Pipeline connection | welding/welding |
|
Areas of application |
heating and water supply systems; compressed air pipelines; steam plants; industrial pipelines. |
Overall dimensions of bellows axial expansion joints DNOVA CB-3131-W PN16 60mm, body material - stainless steel AISI 304
| DN | Permissible tensile strength, mm | Permissible compression,mm |
OAL, mm |
D, mm |
A, mm |
Axial stiffness, N/mm | Weight, kg |
| 50 | 30 | 30 | 240 | 57 | 4 | 150 | 0,6 |
| 65 | 30 | 30 | 240 | 76 | 4 | 184 | 1,5 |
| 80 | 30 | 30 | 250 | 88,9 | 4 | 203 | 2,1 |
| 100 | 30 | 30 | 270 | 108 | 4 | 226 | 2,5 |
| 125 | 30 | 30 | 250 | 133 | 4 | 239 | 2,6 |
| 150 | 30 | 30 | 270 | 159 | 5 | 211 | 3,8 |
| 200 | 40 | 40 | 300 | 219 | 6 | 284 | 9,2 |
| 250 | 40 | 40 | 315 | 273 | 6 | 339 | 12,6 |
| 300 | 40 | 40 | 320 | 325 | 8 | 313 | 13,8 |
Sketch of overall dimensions of bellows axial expansion joints DNOVA CB-3131-W PN16 60mm, body material - stainless steel AISI 304
- Body material
- Stainless steel AISI 304/1.4301
- Maximum allowable temperature
- 550 °C
- Connection type
- For welding
- Operating environment
- Water, Air, and Liquid Medium
- Applications
- Heating Systems, Irrigation Systems, and Ventilation Systems
- Nominal pressure
- 16 bar
- Type of seal
- None
- Compression
- 40 mm
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal