DN15-DN50 Small-Size Threaded Connection Rubber Expansion Joint Connector
DN15-DN50.
The DN15-DN50 small-size threaded connection rubber expansion joint connector is a flexible piping component designed for compact pipeline systems requiring reliable vibration isolation, noise reduction, and compensation for minor misalignment. With nominal diameters ranging from DN15 to DN50, this connector is suitable for small-bore piping applications in HVAC, water supply, drainage, and general industrial services.
Delivery
FOB
minimum order
3 pieces
Supply Ability
100pieces / Month
Country of Origin
China
Stock Time
30Day
Quantity:
US $1.00 - US $100.00 / pieces
Construction and Materials
The connector consists of a high-quality rubber body reinforced with multiple layers of synthetic fabric or steel wire, ensuring excellent pressure resistance and dimensional stability. Both ends are fitted with threaded connections, typically male or female threads, allowing direct installation onto standard pipe threads without the need for additional flanges or welding. The rubber material is commonly EPDM, NBR, or Neoprene, selected according to the conveyed medium. EPDM offers outstanding resistance to hot water, steam, and weather, while NBR provides superior oil resistance. Neoprene is suitable for moderate chemical and ozone exposure.
Key Features
The threaded design enables quick and easy installation in tight spaces, making it ideal for small-size pipelines where flanged connections would be impractical. The flexible rubber body effectively absorbs vibration generated by pumps, compressors, and other rotating equipment, reducing structural noise and protecting adjacent piping and instruments. It also compensates for axial, lateral, and angular movements caused by thermal expansion, contraction, or minor installation misalignment. The smooth inner surface minimizes flow resistance and prevents sediment accumulation.
Technical Specifications
Available nominal diameters range from DN15 to DN50. Working pressure is typically 1.0 MPa or 1.6 MPa, depending on the model and rubber material. Working temperature varies with the rubber compound: EPDM can handle up to 120°C for continuous service, while NBR is generally limited to 80°C. Thread standards can be BSP, NPT, or metric, customized to customer requirements. The connector is designed for vacuum service only when specified and properly supported.
Applications
This small-size threaded rubber expansion joint is widely used in domestic and commercial plumbing systems, HVAC chilled and hot water circuits, small pumps, water meters, and compact industrial equipment. It is particularly effective in reducing vibration transmission from small pumps and in accommodating slight pipe misalignment during installation or operation.
Installation Notes
Install the connector in the pipeline with the arrow mark aligned to the flow direction if indicated. Do not over-tighten the threaded ends, as excessive torque may damage the rubber body or threads. Support the pipeline properly to avoid undue stress on the connector. Inspect periodically for signs of aging, cracking, or leakage, and replace when necessary.
Quality Assurance
Each unit is inspected for dimensional accuracy, thread conformity, and pressure tightness before shipment. The product complies with relevant industry standards and can be supplied with material certificates and test reports upon request.
The connector consists of a high-quality rubber body reinforced with multiple layers of synthetic fabric or steel wire, ensuring excellent pressure resistance and dimensional stability. Both ends are fitted with threaded connections, typically male or female threads, allowing direct installation onto standard pipe threads without the need for additional flanges or welding. The rubber material is commonly EPDM, NBR, or Neoprene, selected according to the conveyed medium. EPDM offers outstanding resistance to hot water, steam, and weather, while NBR provides superior oil resistance. Neoprene is suitable for moderate chemical and ozone exposure.
Key Features
The threaded design enables quick and easy installation in tight spaces, making it ideal for small-size pipelines where flanged connections would be impractical. The flexible rubber body effectively absorbs vibration generated by pumps, compressors, and other rotating equipment, reducing structural noise and protecting adjacent piping and instruments. It also compensates for axial, lateral, and angular movements caused by thermal expansion, contraction, or minor installation misalignment. The smooth inner surface minimizes flow resistance and prevents sediment accumulation.
Technical Specifications
Available nominal diameters range from DN15 to DN50. Working pressure is typically 1.0 MPa or 1.6 MPa, depending on the model and rubber material. Working temperature varies with the rubber compound: EPDM can handle up to 120°C for continuous service, while NBR is generally limited to 80°C. Thread standards can be BSP, NPT, or metric, customized to customer requirements. The connector is designed for vacuum service only when specified and properly supported.
Applications
This small-size threaded rubber expansion joint is widely used in domestic and commercial plumbing systems, HVAC chilled and hot water circuits, small pumps, water meters, and compact industrial equipment. It is particularly effective in reducing vibration transmission from small pumps and in accommodating slight pipe misalignment during installation or operation.
Installation Notes
Install the connector in the pipeline with the arrow mark aligned to the flow direction if indicated. Do not over-tighten the threaded ends, as excessive torque may damage the rubber body or threads. Support the pipeline properly to avoid undue stress on the connector. Inspect periodically for signs of aging, cracking, or leakage, and replace when necessary.
Quality Assurance
Each unit is inspected for dimensional accuracy, thread conformity, and pressure tightness before shipment. The product complies with relevant industry standards and can be supplied with material certificates and test reports upon request.
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