Features
- Control Ring Type Expansion Joint has structure that inserted ring to make every bellows work equally and reinforced intensity of bellows internal pressure to endure high pressure
Application
Hot water, high pressure steam, oil, and other pipelines
Pressure
0.2MPa to 20
Features
DMTflex Teflon expansion joint are used primarily in fluid conducting systems as resilient connections and tremor barriers. They are designed to compensate for mis-alignment, to absorb expansion and contraction and to isolate vibration and shock. They are also frequently used to reduce stress on fragile mating flange.
Application
Air conditioning, heating and ventilating systems in industrial buildings, hospitals, hotels and on board ships central and ancillary power generating stations in industrial building, factories, ships and off-shore sewage disposal and water treatment plant, pumps, etc.
Process piping in pulp and paper manufacture.
Operating temperature range
40 Degree Centigrade up to 220 Degree Centigrade
At Unick Control System, we take pride in manufacturing high-quality expansion bellows, both rubber and metallic, meticulously designed to meet our clients' exact specifications. Our expansion bellows are engineered to absorb thermal expansion, vibration, and mechanical stresses, ensuring enhanced performance and durability in a wide range of industrial applications, including power plants, chemical industries, and HVAC systems. Using advanced materials and cutting-edge technology, we deliver products that offer exceptional flexibility, pressure resistance, and longevity. Whether itâ??s rubber bellows for superior elasticity or metallic bellows for high-temperature and pressure environments, we work closely with our clients to provide customized solutions that meet their operational needs and ensure seamless functionality.
Expansion joint,Expansion joint Supplier
Size : DN50~DN1000
 Pressure : Max 4.0 Mpa
 Bellows : Carbon Steel / Stainless Steel
 Other parts : Carbon Steel / Stainless Steel
Expansion joint
Expansion joint can also be called pipe expansion joint, compensator, expansion. Expansion joint is divided into: corrugated expansion joint, sleeve expansion joint, square natural compensation expansion joint and other major types,
1. Compensation for expansion deformation caused by heating of absorption pipeline in axial, lateral and angular directions.
2. Absorb equipment vibration to reduce the influence of equipment vibration on pipeline.
3. The amount of deformation of pipelines by absorbing earthquake and subsidence.
Because of the heat expansion and cold contraction of the pipe, so for the pipe, it is necessary to produce the stress and push tension of the pipe wall; The stress on the wall of the pipe affects the strength of the pipe, and the push and pull force increases. The fixed bracket of the pipe should be made large to withstand the push and pull force generated by the pipe expansion. Therefore, the variable opening method compensated by the ductile iron pipe mechanical joint fittings is used to reduce the stress and thrust of the pipe wall.
The expansion joint is mainly used to compensate the expansion deformation caused by the temperature change of the pipeline, and also to compensate the length of the pipeline due to the installation and adjustment. It is mainly divided into three structural forms: wholesale elbow expansion joint, bellows expansion joint and casing expansion joint.
To provide stress relief in ducting system by absorbing any difference in dimension caused by thermal change.
To protect equipment by reducing equipment vibration.
To provide simple connection of misaligned pipes.
Accommodate expansion and contraction movement in axial, lateral and angular direction.
Prevent the propagation of electricity
Dampen sound transmission
Type, Size and Pressure Rating
Type : Single arch type, multi arch type, sleeve, Joint type, Enlarge Flange type, wide arch type.
Size : 50 to 3000 mm
Pressure (base on dia) : Upto 25 kg/cm2
Permissible movement : Axial (compression) - upto 200 mm
Axial (elongation) - upto 75 mm
Transverse - upto 75 mm
Face to Face length : 50 to 700 mm
1. Acid resistance Flexible Rubber Joint can greatly reduce pipeline system vibration and noise, can solve the problem of joint displacement, axial expansion, etc.
2. According to different materials ma nufacture, flexible rubber joint can be made into many kinds: acid resistance, alkali resistance, corrosive resistance, oil resistance, heat resistance, adapt to many mediums and different environment.
3. Material is polar rubber, good sealing, light weight, easy installation, long service life, avoid contacting with sharp metal device.
4. If use overhead, can match with elastic support, when installation, bolt with diagonal method to tighten up.
5. If pipeline pressure is high, use bolt connect the flange both ends.
6. Flange connection standard is GB4216.3-4216.5.
No. Part Meterial
1 Body NR, CR, IIR, NBR, FKM, EPDM
2 Inner & Outer Rubber NR, CR, IIR, NBR, FKM, EPDM, PTFE
3 Body Carcass Nylon cord fabric
4 Reinforcing Ring Multi-strand coppering steel wire
5 Flange Cast and forged carbon steelStainless steelPlastic (CPVC, PVDF, PPH, UPVC, RPP)
MAIN DATA
Nominal Diameter(DN) Length L Axial displacement Horizontal Isplacement Angular deflection
mm inch mm Extension Compression mm (a1+a2)
32 1¼ 95 6 9 9 15º
40 1½ 95 6 10 9 15º
50 2 105 7 10 10 15º
65 2½ 115 7 15 11 15º
China zhengzhou mason is china's largest manufacturer of rubber expansion joints of the best, our products are sold around the world. Our main products include rubber joints expansion joints, dismantling joints, steel expansion joints.
Rubber joints are made of nbr rubber, ptfe rubber, epdm.
The flange of rubber expansion joints can be made jis flange, din flange, ansi flange and bs4504 flange.
Variety of materials rubber were applied to different media.
Different materials of flanges are applicable to different working environment.
Please choose according to their specific working environment.
Type: Single Type, Double Type, BSP/NPT Thread Type
Size Range: DN25-DN1600
Material of Rubber ball: CR, NBR, EPDM, HYPALON, VITON
Material of flange: Galvanized Steel, Stainless Steel
Working temperature: -20â?? to +115â??
Ball length for Single Sphere: 130mm, 150mm, 95mm-300mm
Ball length for Double Sphere: 175mm-345mm
Ball length for Union Type: 200mm for DN15-DN50, 240mm for DN65-DN80.
Thread End Connection: BSP or NPT thread
Flange End Connection: EN1092-1 PN10/PN16, ANSI150, BS4504, AS2129 Table D/E.
Working Pressure: PN6, PN10, PN16, PN25
Application: water, warm water, seawater, weak acids, alkalis, etc...
Easy installation and remove; absorbs vibration, noise and shock
