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Clamp-type Rubber Expansion Joint

Clamp-type Rubber Expansion Joint

Clamp-type rubber expansion joints use stainless steel clamps instead of flanges, offering quick-installation via a socket design. They are characterized by low cost, easy assembly and disassembly, and space saving, making them the preferred choice for flexible connections in low-pressure pipelines.

Clamp-type Rubber Expansion Joint
Clamp-type Rubber Expansion Joint
Clamp-type Rubber Expansion Joint
Clamp-type Rubber Expansion Joint
Clamp-type Rubber Expansion Joint

Structure and Construction

1. Rubber Sphere: Inner rubber (media resistant) + multi-layer cord reinforcement + outer rubber (aging resistant); Material: Natural rubber, EPDM, nitrile rubber.

2. Stainless Steel Clamp: Made of 304/316 stainless steel, it secures the pipe to the sphere, providing a leak-proof seal.

3. Socket Port: Smooth rubber ends that directly fit over the pipe wall without the need for flanges.

Working Principle

Clamp-type-rubber-expansion-joint-10

Flexible Compensation: The elastic rubber absorbs axial expansion and contraction, lateral misalignment, and angular deflection of the pipeline, resolving issues related to thermal expansion and contraction and installation deviations.

Vibration Reduction and Noise Reduction: Isolates pump/equipment vibration, reducing noise by 20-30dB, protecting the pipeline network and equipment.

Clamp Sealing: The clamp evenly presses against the rubber port, tightly gripping the pipe wall; the higher the pressure, the tighter the seal.

Core Features

1. Super-fast Installation: Socket and clamp locking, completed in 3 minutes, no flanges/bolts/diameter alignment required.

2. Cost-effective and Material-saving: Flange-free and bolt-free, reducing costs by 30%+.

3. Space-friendly: Short length, no flanged outer edge, suitable for narrow spaces/ceiling pipes.

4. Easy Disassembly and Assembly: Disassembly is simple, just loosen the clamps for maintenance, suitable for frequent repairs/temporary pipes.

5.Reliable Sealing: Fully enclosed ports, uniform clamping force, zero leakage under low pressure.

 

Application Scenarios

1. Water Supply/Drainage/Fire Protection: Low-pressure tap water, fire branch pipes, garden sprinkler irrigation pipes.

2. HVAC/Air Conditioning: Central air conditioning circulating water, cooling tower connection pipes.

3. Pump Room/Equipment: Pump inlet and outlet (low pressure), fan/compressor vibration damping connections.

4. Temporary/Maintenance: Temporary pipelines on construction sites, filter/valve locations requiring frequent disassembly and assembly.

5. Municipal/Sewage: Sewage treatment plant chemical dosing pipes, sludge pump low-pressure pipelines.

 

Technical Specifications

Clamp-type-rubber-expansion-joint-11

 

serial number name Material quantity
1 clamp Q235, 304, 316L 2 pieces
2 Inner and outer adhesive layers IIR、CR、EPDM、NR、NBR 1 set
3 skeleton layer polyester cord n layers

 

Nominal diameter DN Installation length
L
Axial elongation (mm) Axial compression

mm
Radial displacement (mm) deflection angle(α₁+α₂)°
mm inch
50 2 180 7 10 10 15
65 180 7 13 11 15
80 3 180 8 15 12 15
100 4 180 10 19 13 15
125 5 180 12 19 13 15
150 6 180 12 20 14 15
200 8 200 16 25 22 15
250 10 200 16 25 22 15
300 12 200 16 25 22 15
350 14 200 16 25 22 15
400 16 200 16 25 22 15
450 18 200 16 25 22 15
500 20 200 16 25 22 15
600 24 200 16 25 22 15
700 28 200 16 25 22 10
800 32 200 16 25 22 10
900 36 200 16 25 22 10
1000 40 200 18 25 22 10
1200 48 200 18 25 24 10
1400 56 200 20 26 24 10
1600 64 200 25 26 26 10
1800 72 200 20 26 26 10
2000 80 200 20 26 26 10

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