Well-designed Dryer Flexible Air Vent Ducting - Expansion Joints / Fabric Expansion Joints – DACO
Well-designed Dryer Flexible Air Vent Ducting - Expansion Joints / Fabric Expansion Joints – DACO Detail:
Application of Non-metal Fabric Expansion Joints
Corrugated Fabric Expansion Joints with revers are new kind of non-metal expansion joints. The typical advantages are lightweight, supple, hermetic, high working temperature, anti-corrosive,big compensation rate and easy installation. They are suitable for the flexible connection between different ventilation fans, ducts and pipework; can compensate the thermal deformation of pipework and release the pipework stress; reduce or weaken the vibration of the pipework; and make the installation of whole system easier.
Corrugated Fabric Expansion Joints are different from those traditional non-metal expansion joint. It is made of single layer or multiple layers of rubber and fabrics, laminated under high temperature and pressure; the revers is turned over and shaped once with special technics, which is different from the craftwork for producing traditional fabric expansion joints—- gluing, sewing, covering and flange pressing. And the special technics make our expansion joints overcome the traditional expansion joints’ weak points such as not-firmly laminated, not hermetic, leaking, heavy, hard for installation and maintenance.
Corrugated Fabric Expansion Joints connect to the flanges with its own rubber layer on the revers, the connection is very hermetic; and can sustain max 2MPa working pressure. The axial compression ratio, radial and rotational shifting are much better than traditional expansion joints. Our Corrugated Fabric Expansion Joints are very ideal for ventilation fans, pipework to reduce the system vibration, noise and stress. They are the best parts you should have for your system.
We use different kinds of fabrics to make the expansion joints according to our customers’ technical requirements and application environments, such as silicon rubber, fluorine rubber, Ethylene-Propylene-Diene Monomer(EPDM).
Recommended Application
● Process industry
● Petrochemical industry
● Chemical industry
● Pharmaceutical industry
● Toxic, hazardous, chemical media
● Residue and waste incineration
● Calcination
● Reduction
● Oil and gas industry
● Refining technology
● Power plant technology
● Pulp and paper industry
● Metal production and processing
● Cement industry
● Flue gas ducts
● Boiler inlets and outlets
● Pipe penetration
● Process lines
● Stacks
● Industries with higher requirements
Advantages
● Reduced pollution emissions
● Safe operation
● Significant reduction in primary energy consumption
● Long service life, low wear
● Predictable downtime
● Available as retrofit on existing systems
● Good flexibility
● High chemical resistance
● Reduced heat loss
● Minimal reaction force
※ Customized to fit actual working conditions and materials on request.
| Fabric Material | Weather proof functions | Physical functions | Chemical functions | working temperature | Not for | |||||||||||||||||
| ozene | oxide | sunlight | radiation | fabric thickness | pressure range | axial compression ratio (%) |
axial stretch ratio (%) |
radial shifting (%) |
suitable for fluids |
Hot H₂SO₄ | Hot H₂SO₄ | Hot HCL | Hot HCL | Anhydrous ammonia |
NaOH | NaOH | working temperature range |
Max continious working temperature |
temporary max working temperature |
|||
| fabric+gas seal layer | Positive pressure | Negative pressure | <50% | >50% | <20% | >20% | <20% | >20% | ||||||||||||||
| EPDM rubber（EPDM） | good | good | good | good | 0.75～3.0mm | max34.5 min14.5 |
max34.5 min14.5 |
60% | 10-20% | 5-15% | corrosive gas organic solvents general gas |
suitable (good) |
average or poor |
average | poor | suitable (good) |
suitable (good) |
suitable (good) |
-50～148℃ | 148℃ | 176℃ | Aliphatic hydrocarbons Aromatic hydrocarbons |
| Silicone Rubber(SL) | good | good | good | average | 0.6～3.0mm | max34.5 min14.5 |
max34.5 min14.5 |
65% | 10%～25% | 5%～18% | general gas | poor | poor | poor | poor | poor | suitable (good) |
average | -100～240℃ | 240℃ | 282℃ | Solvent oil acid alkali |
| Chlorosulfonated polyethylene rubber (CSM/Hypalon) |
good | good | good | good | 0.65～3.0mm | max34.5 min14.5 |
max34.5 min14.5 |
60% | 10-20% | 5-15% | corrosive gas organic solvents general gas |
suitable (good) |
average | average | poor | average | suitable (good) |
suitable (good) |
-40～107℃ | 107℃ | 176℃ | Concentrated hydrogen chloride |
| Teflon plastic (PTFE) | good | good | good | good | 0.35～3.0mm | max34.5 min14.5 |
max34.5 min14.5 |
40% | 5%～8% | 5%～10 | Most of the corrosive gas organic solvents |
suitable (good) |
suitable (good) |
suitable (good) |
suitable (good) |
suitable (good) |
suitable (good) |
suitable (good) |
-250～260℃ | 260℃ | 371℃ | Poor wear resistance |
| Fluororubber(FKM)/Viton | good | good | good | average | 0.7～3.0mm | max34.5 min14.5 |
max34.5 min14.5 |
50% | 10-20% | 5-15% | corrosive gas organic solvents general gas |
suitable (good) |
suitable (good) |
suitable (good) |
suitable (good) general |
poor | suitable (good) |
average | -250～240℃ | 240℃ | 287℃ | ammonia |
| Fabric Material | Characteristic | Suitable for fluids | NOT for | Typical product picture | ||||
| EPDM rubber（EPDM） | 1. With high tensile strength and elongation, good impact elasticity, easy installation. 2. Has excellent oxidation and ozone resistance. 3. Excellent water resistance and excellent resistance to chemicals. 4. Suitable for alcohol and ketone. 5. Good gas impermeability, good wear resistance and sealing performance. |
corrosive gas organic solvents general gas |
Aliphatic hydrocarbons Aromatic hydrocarbons |
 |
||||
| Silicone Rubber (SL) | 1. Good elasticity and compressibility. 2. Has excellent oxidation and ozone resistance. 3. Excellent heat and low temperature resistance. 4. Suitable for neutral solvent gas. 5. Has low hygroscopicity and acts as a barrier. 6. High tensile strength and tear strength, good wear resistance and sealing performance, easy installation. |
general gas | Solvent oil acid alkali |  |
||||
| Chlorosulfonated polyethylene rubber(CSM)/Hypalon |
1. With high tensile strength and elongation, good impact elasticity, easy installation. 2. Has excellent oxidation and ozone resistance. 3. Excellent acid and abrasion resistance. 4. Suitable for oxidizing acid gas such as nitric acid and sulfuric acid. 5. Good heat resistance, flame retardant, solvent resistance and most chemicals and acid and alkali resistance. |
corrosive gas organic solvents general gas |
Concentrated hydrogen chloride |  |
||||
| Teflon plastic (PTFE) | 1. Excellent chemical resistance, resistant to most oils and solvents. 2. Has excellent oxidation and ozone resistance. 3. Good radiation resistance and high vacuum resistance. 4. Suitable for strong acids, bases, strong oxidants, various solvents and oil gases. 5. Resistant to severe temperature fluctuations and aggressive chemicals. 6. Low fold resistance, elasticity and breathability for easy installation. |
Most of the corrosive gas organic solvents |
Poor wear resistance |  |
||||
| Fluororubber (FKM)/Viton | 1. Excellent chemical resistance, resistant to most oils and solvents. 2. Has excellent oxidation and ozone resistance. 3. Good radiation resistance and high vacuum resistance. 4. Suitable for acids, bases, strong oxidants, various solvents and oil gases. 5. Resistant to severe temperature fluctuations and aggressive chemicals. 6. Good folding resistance, elasticity and sealing performance, easy installation. |
corrosive gas organic solvents general gas |
ammonia |  |
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Product detail pictures:
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