How it works
Rubber expansion joint
The number that matters
Nominal pressure
10bar
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
A rubber expansion joint is a flexible pipe fitting designed to absorb movements, vibrations, and noise in a piping system. It comprises a rubber body and metal flanges or inserts, offering high flexibility to compensate for axial, lateral, and angular movements, preventing stress and damage caused by thermal expansion and vibrations. These joints absorb vibrations, reducing noise levels and extending equipment lifespan. They are corrosion-resistant, easy to install, and low maintece, finding applications in industries like HVAC, power plants, and chemical facilities where compensating for thermal movements and vibrations in pipelines is crucial. Various types, such as single sphere and multiple arch designs, cater to specific movement requirements and are chosen based on factors like temperature, pressure, and application needs.
Overall dimensions of rubber compensators DNOVA CR-N34-F PN10, body material - NBR, cord material - NBR
| DN | a, permissible angular displacement | L1, permissible compression, mm | L2, allowable extension, mm | L3, permissible linear displacement (shift), mm | Weight, kg |
| 25 | 15° | 8 | 4 | 8 | 2,0 |
| 32 | 8 | 4 | 8 | 3,0 | |
| 40 | 8 | 4 | 8 | 4,5 | |
| 50 | 8 | 5 | 8 | 5,0 | |
| 65 | 12 | 6 | 10 | 6,0 | |
| 80 | 12 | 6 | 10 | 7,5 | |
| 100 | 18 | 10 | 12 | 9,0 | |
| 125 | 18 | 10 | 12 | 12,0 | |
| 150 | 18 | 10 | 12 | 15,0 | |
| 200 | 25 | 14 | 22 | 20,0 | |
| 250 | 25 | 14 | 22 | 25,0 | |
| 300 | 25 | 14 | 22 | 30,0 |
| DN | D, outer diameter of flange, mm | D1, center distance of connecting holes, mm | b, flange thickness, mm | L, construction length, mm | Number and diameter d of connecting holes, mm |
| 25 | 115 | 85 | 13 | 95 | 4-16 |
| 32 | 140 | 100 | 14 | 95 | 4-18 |
| 40 | 150 | 110 | 14 | 95 | 4-18 |
| 50 | 165 | 125 | 16 | 105 | 4-18 |
| 65 | 185 | 145 | 16 | 115 | 4-18 |
| 80 | 200 | 160 | 16 | 130 | 8-18 |
| 100 | 220 | 180 | 18 | 135 | 8-18 |
| 125 | 250 | 210 | 18 | 170 | 8-18 |
| 150 | 285 | 240 | 20 | 180 | 8-22 |
| 200 | 340 | 295 | 20 | 205 | 8-22 |
| 250 | 405 | 350 | 21 | 240 | 12-22 |
| 300 | 460 | 400 | 21 | 260 | 12-22 |
Sketch of dimensions of rubber compensators DNOVA CR-N34-F PN10, body material - NBR, cord material - NBR
Specification of rubber compensators DNOVA CR-N34-F PN10, body material - NBR, cord material - NBR
Specification sketch for rubber expansion joints DNOVA CR-N34-F PN10, body material - NBR, cord material - NBR
| № | Part name | Material |
| 1 | Body | NBR |
| 2 | Hull reinforcement | nylon tire cord |
| 3 | Flanges | galvanized steel WCB |
| 4 | Wire rings | steel |
- Body material
- NBR
- Maximum allowable temperature
- 80 °C
- Connection type
- Flanged
- Operating environment
- Water, Air, and Liquid Medium
- Applications
- Heating Systems, Irrigation Systems, and Ventilation Systems
- Nominal pressure
- 10 bar
- Type of seal
- None
- Cord material
- NBR
- Compression
- 25 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