Basic Info.
Kind
Corrugated Compensator
Certification
CE, ISO14001, JIS, ISO9001
Product Description
RUBBER EXPANSION JOINTS
Rubber expansion joint is a flexible connector fabricated of natural and/or synthetic elastomers and fabric, if necessary, internal metallic reinforcements designed to provide stress relief in piping systems due to thermal movements and mechanical vibration.
There are lots of material selection based on usage area of rubber expansion joints. Also rubber expansion joints have advantages and disadvantages between of the metal expansion joints. Rubber expansion joints can absorb large movement in very short distance. They provide all directional movement, such as axial, angular, lateral and torsional that may occur from external conditions. Also reduce wind, shock loading and seismic movements. APPLICATION AREAS
• Heating and cooling devices
• Materials handling technologies
• Water pipes
• Desalination plants
• Compressors
• Blowers and fans
• Cement industry
• Chemical industry
• Glass industy
• Wood-processing industry
• Pulp and paper industry
• Railed vehicles
• Refineries
• Shipbuilding
• Steel mills
• Sugar industryIndustryFrom project work for highly complex components such as the Catofin process to series expansion joints and standard flexible metal hoses for maintenance applications: Amosflex is your partner for plant engineering and construction, pipeline construction, device and machine construction, energy generation and many other speciality markets. Technical Building EquipmentQuality from roof to cellar: from bellows elements and connections for solar thermal collectors through to underground gas house connections, our products guarantee reliable operational security. ADVANTAGES
Spherical joints have a distinct advantage over metallic expansion joints for corrosive applications and installations requiring a high cycle life. The contour prevents sediment accumulation and creates less turbulence and pressure drop than spool joints. The seal bead eliminates any requirement for gaskets between mating flanges. Spheres may be installed on raised-face or flat-face flanges.
COMPARISON AGAINST METAL EXPANSION JOINTS
Temperature: Rubber joints with standard construction and materials have an upper range to 110°C. Can be offer special constructions up to 200°C. Metal expansion joints do offer a far greater range, from -250°C to +950°C.
Pressure: Rubber joints depending on diameter, can have pressure capabilities up to 15 bar with a full vacuum rating. Metal joints can be designed for pressures up to 100 bar.
Movements: Rubber and metal expansion joints have similar movement capabilities in the axial plane (compression and extension). However, rubber joints are certainly able to absorb greater lateral movements when compared to metal joints that have similar face to face lengths.
Spring Rates: Rubber and metal joints do have similar characteristics in the axial plane for the standard face to face dimensions. Metal joints are much stiffer when subjected to lateral motion and, typically have a lower lateral movement capability.
Acoustical Impedance: Although well designed (multi-ply) metal joints can lower the transmission of visible vibration, they will continue to transmit distracting and/or damaging noise. Rubber joints significantly reduce the undesirable transmission in piping systems. The elastomeric composition of the joint acts as a dampener that absorbs the greatest percentage of perceptible noise and vibration.
Abrasion/Erosion Resistance: Metal joints typically have a wall thickness anywhere between 0.15mm to 2mm. Rubber joints are much thicker, 12mm to over 25mm. The thin construction of metal joints makes them susceptible to erosive chemicals and abrasive liquids and slurries. Rubber joints are highly resistant to abrasion and erosion of all types and outperform metal joints in the applications where these conditions prevail.
Fatigue/Cycle Life: The fatigue life of a metal joint is affected by many factors such as temperature, pressure, movement, vibration and how the joint was initially designed. Typically, metal joints have a defined cycle or fatigue life that can be calculated through various formulas (EJMA). Metal joints frequently succumb to fatigue failure from excessive cycling/movement. Rubber joints on the other hand are constructed of resilient elastomers and the joint itself acts as a vibration dampener, not susceptible to fatigue/cycle failure.
Installation/Maintenance: Rubber joints do not require additional gasketing and, in many cases, are installed without the use of special handling equipment. Metal joints must be serviced occasionally to insure that the flange gasket is still intact and not deteriorated
MATERIAL SELECTION
Material selection of rubber expansion joints are very variable and depends on the pressure, temperature, fluid etc. parameters. The common materials are, EPDM, IIR, NBR, PTFE and combined with these materials depends of usage area. Also the inner tube and outer tube's diameter can be different depends of design conditions.
| Table I: Maximum Temperature Ratings |
| Reinforcing Fabric | Tube or Cover Elastomer |
| Pure Gum Rubber | Neoprene | Butyl | Nitrile | Hypalon® | EPDM | FKM |
| Nylon | 180 °F / 82 °C | 225 °F / 107 °C | 250 °F / 121 °C | 210 °F / 99 °C | 250 °F / 121 °C | 250 °F / 121 °C | 250 °F / 121 °C |
| Polyester | 180 °F / 82 °C | 225 °F / 107 °C | 250 °F / 121 °C | 210 °F / 99 °C | 250 °F / 121 °C | 250 °F / 121 °C | 250 °F / 121 °C |
| Aramid | 180 °F / 82 °C | 225 °F / 107 °C | 300 °F / 149 °C | 210 °F / 99 °C | 250 °F / 121 °C | 300 °F / 149 °C | 400 °F / 204 °C |
| Table II. List of Elastomers Used in Expansion Joints and Rubber Pipes |
MATERIAL
DESIGNATION | RATING SCORE CODE | ELASTOMER PHYSICAL AND CHEMICAL PROPERTIES COMPARISON |
ANSI/ASTM
D1418-77 | ASTM-D-2000
D1418-77 | 7-Outstanding
6-Excellent
5-Very Good
4-Good
3-Fair to Good
2-Fair
1-Poor to Fair
0-Poor
X-Contact Mfg. | ALKALI, CONC.
ANIMAL VEG. OIL
CHEMICAL
WATER | OXYGENATED HYDRO.
LACQUERS
OIL & GASOLINE
ALKALI, DILUTE | ACID DILUTE
ACID, CONC.
ALPHATIC HYDRO
AROMATIC HYDRO | ELE. INSULATION
WATER ABSORP
RADIATION
SWELLING IN OIL | REBOUND-COLD
COMP. SET
TENSILE STRENGTH
DIELECTRIC STR. | ABRASION
IMPERMEABILITY
DYNAMIC
REBOUND-HOT | HEAT
COLD
FLAME
TEAR | OZONE
WEATHER
SUNLIGHT
OXIDATION |
COMMON NAME
CHEMICAL GROUP NAME |
| CR | BC BE | NEOPRENE
CHLOROPENE | 4 3 4 0 | 4 4 0 1 | 2 3 4 6 | 4 5 4 3 | 5 4 2 4 | 5 2 4 5 | 4 4 4 4 | 5 5 6 5 |
| NR | AA | GUM RUBBER
POLYISOPRENE, SYNTHETIC | 5 3 X X | X 0 0 4 | 0 0 3 3 | 0 6 5 5 | 6 6 4 6 | 6 6 2 7 | 5 0 5 2 | 4 0 2 0 |
| IR | AA | NATURAL RUBBER
POLYISOPRENE, SYNTHETIC | 5 3 X X | X 0 0 4 | 0 0 3 3 | 0 6 5 5 | 6 6 4 6 | 6 2 2 6 | 5 0 5 2 | 4 0 2 0 |
| IIR | AA | BUTYL
ISOBUTENE-ISOPRENE | 5 6 5 4 | 4 0 3 4 | 0 0 4 6 | 0 4 5 5 | 4 3 0 | 5 2 6 4 | 4 0 4 5 | 6 5 5 6 |
| FKM | HK | FLUOROCARBON
ELASTOMER | 5 6 6 0 | 4 6 1 0 | 6 6 6 5 | 6 5 5 3 | 5 5 6 2 | 4 5 5 5 | 2 6 2 7 | 7 7 7 7 |
| EPR | BA CA DA | EPDM
ETHYLENE-PROPYLENE-
DIENE-TERPOLYMER | 5 6 5 6 | 6 0 3 6 | 0 0 4 6 | 0 7 6 6 | 7 5 4 6 | 6 5 4 5 | 4 0 5 6 | 6 7 6 7 |
| AFMU | | PTFE/TFE/FEP
FLUORO-ETHYLENE-
POLYYMERS | 7 7 7 7 | 7 7 7 7 | 7 7 7 7 | 7 3 7 X | X X X X | X X X 4 | X X X 7 | 7 7 7 7 |
| SI | GE | SILICONE | 5 5 5 0 | 2 X 0 2 | 0 0 2 6 | 2 5 6 6 | 4 0 3 6 | 6 0 2 0 | 2 2 6 7 | 6 6 6 6 |
TYPES OF RUBBER EXPANSION JOINTS
ARCH TYPE:
A full face integral flange design is available in both Single Arch and Multiple Arch Types.
Single Narrow Arch Type:
Construction is of fabric and rubber, reinforced with metal rings or wire. The full face flanges are integral with the body of the joint and drilled to conform to the bolt pattern of the companion metal flanges of the pipeline.
This type of rubber face flange is of sufficient thickness to forma tight seal against the metal flanges without the use of gaskets.
Multiple Narrow Arch Type:
Joints with two or more arches may be manufactured to accommodate movements greater than those of which a Single Arch Type joint is capable.
Multiple Arch joints of most manufacturers are composites of standard sized arches and are capable of movements of a single arch multiplied by the number of arches.
PTFE Lined
Spool Arch Type joints are available in many standard pipe sizes with Fluoroplastic liners of TFE and/or FEP. These liners are fabricated as an integral part of the expansion joint during manufacture and cover all wetted surfaces in the tube and flange areas. Fluoroplastic provides exceptional resistance to almost all chemicals within the temperature range of the expansion joint body construction.
Non-metallic Reinforced Design
Constructed similar to the Spool "Arch" Type except the carcass does not contain wire or metal ring reinforcement. Pressure resistance is accomplished through the use of special external flanged retaining rings furnished with the joint.
Reducer Type
Reducing expansion joints are used to connect piping of unequal diameters. They may be manufactured as a concentric reducer with the axis of each end concentric with each other or as an eccentric reducer having the axis of each end offset from each other. Tapers in excess of 20 degrees are not desirable.
Sleeved Arch Type
This joint is similar to the "Arch"typeexcept that the capped sleeve ends have an I.D. dimension equal to the O.D. of the pipe. These joints are designed to slip over the straight ends of the open pipe and be held securely in place with clamps. This type of joint is recommended only for low to medium pressure and vacuum service because of the difficulty of obtaining adequate clamp
QUALITY OF OUR EXPANSION JOINT
We aim to provide products to work with maximum service life for any operating condition. As the leader of expansion joints production, Amosflex operates its production complying with the standards that recognized by the most important national and international bodies and industrial associations.
ADDITIONAL QUESTIONS
Nothing beats direct contact. We are happy to take the time for a personal discussion with you to answer your questions on an individual basis.
Please send us an inquiry using the contact form, and we will immediately get back to you.Our CustomerProduct Process
Company OverviewELIAS TONGLI is one of the most prestigious professional manufacturers of anti-vibration series products, which has has a good business relationship with many large enterprises and engineering companies at home and abroad. Relying on strong independent research and development ability and superior process technologies, the quality of our products leads the industry.
Our company was established in Shanghai in 2005, and set up a factory in Kunshan, Jiangsu Province in 2013. Our company has provided the designs and installation of pipe joints and shock absorbers for many large scale projects. Our products have passed ISO9001, and are widely used in many industries. Such as the pipeline system and central air conditioning system of semiconductors, electronics, chemical industry, machinery, automobiles, constructions, advanced hospitals and hotels, etc.
For a long time, we have kept in accordance with the concept of" Seriousness, Innovation, Service and Growth". We have always been at the lead level of this industry. With the principle of " Customer First, Honest First ", we established long time cooperation with many enterprises. We warmly welcome friends from all over the world to visit and negotiate business.FAQ
Q : Are you trading company or manufacturer?
A: We are manufacturer of rubber expansion joint, metal expansion joint, flexible hose, dismantling joint, dresser coupling, flange adapter and flange with more than 13-year experience.
Q: Do you have products catalog?
A: Yes, we have. Please tell me your email or instant messager, we will send our catalog.
Q: Can you provide drawings and technical data?
A: Yes, our professional technical department will design and provide drawings and technical data.
Q: Do you provide samples? Is it free or charged?
A: Yes, we can offer sample free but shipping charges covered by customer.
Q: Can the products be manufactuered by customer's requirement?
A: Yes, the specifications stated above are the standard ones, we can design and manufacture as requirement.
Contact us for more details about price and packing, shipping and discount now!
Address:
No. 260 Kanghui Road, Kunshan City, Jiangsu Province China, Suzhou, Jiangsu, China
Business Type:
Manufacturer/Factory, Trading Company
Business Range:
Construction & Decoration, Furniture, Industrial Equipment & Components, Tools & Hardware
Management System Certification:
ISO 9001
Company Introduction:
ELIAS TONGLI is one of the most prestigious professional manufacturers of anti-vibration series products, which has has a good business relationship with many large enterprises and engineering companies at home and abroad. Relying on strong independent research and development ability and superior process technologies, the quality of our products leads the industry.
Our company was established in Shanghai in 2005, and set up a factory in Kunshan, Jiangsu Province in 2013. Our company has provided the designs and installation of pipe joints and shock absorbers for many large scale projects. Our products have passed ISO9001, and are widely used in many industries. Such as the pipeline system and central air conditioning system of semiconductors, electronics, chemical industry, machinery, automobiles, constructions, advanced hospitals and hotels, etc.
For a long time, we have kept in accordance with the concept of" Seriousness, Innovation, Service and Growth". We have always been at the lead level of this industry. With the principle of " Customer First, Honest First ", we established long time cooperation with many enterprises. We warmly welcome friends from all over the world to visit and negotiate business.
