Thread Union Rubber Expansion Joint

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Threaded Rubber Expansion Joint
- Brand: Xinhuafeng
- Packaging: Wooden Case Packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
Multi-layer rubber-enabled pipe flexible core: The outstanding advantages of Thread Union Rubber Expansion Joint and system synergyAmong the flexible connection solutions for piping systems, the Thread Union model of the Rubber Expansion Joint family stands out with its unique multi-layer rubber structure. It is...

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Flexible Rubber Expansion Joints for Piping Systems
- Brand: Xinhuafeng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
Flexibility guarantee of piping system: From Rubber Expansion Joint to the synergy of various core fittingsIn the complex world of piping systems, various flexible connection fittings support the stable operation of fluid transportation like "joints", and Rubber Expansion Joint is undoubtedly the backbone among them....

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China Thread Union Rubber Expansion Joint Suppliers

A Thread Union Rubber Expansion Joint is a flexible pipeline connector combining rubber’s elasticity with threaded union connections, designed to compensate for axial, lateral, and angular displacements in systems where Flange connections are impractical. Its core structure features a rubber body—made from EPDM, natural rubber, or nitrile—reinforced with fabric or metal layers for strength, paired with threaded union ends for secure, tool-free installation.

This design excels in tight spaces or small-diameter pipelines, offering easy assembly without flanges. The threaded union allows quick disconnection for maintenance, unlike welded or flange joints. It absorbs vibrations from pumps or motors, reduces noise, and accommodates thermal expansion, protecting pipes and equipment from stress damage. Compatible with water, oils, and mild chemicals, it’s ideal for HVAC, plumbing, and light industrial applications.

In system integration, it works with key components: a Bellow Expansion Joint handles large thermal displacements, while this Rubber Joint dampens vibrations. A Flexible Metal Hose adds routing flexibility nearby. For flange transitions, a Flange Adaptor bridges connections. A Dismantling Joint simplifies major repairs, and a Duckbill Check Valve prevents backflow, enhancing system safety.

Key advantages include easy installation, vibration reduction, and corrosion resistance. Its threaded union design ensures leak-tight seals even with minor movement. More compact than flange variants, it suits residential and commercial systems needing flexibility. By balancing adaptability and durability, it ensures reliable performance in diverse fluid handling networks, proving essential for efficient pipeline operation.

Thread Union Rubber Expansion Joint

Threaded union rubber expansion joint, also known as threaded rubber joint, threaded flexible rubber joint or rubber soft joint, is a rubber joint that connects pipes through threaded connection. Threaded rubber expansion joint is a tubular rubber part composed of inner and outer rubber layers, cord layers and wire rings, which is combined with metal flanges or parallel joints after vulcanization. It usually consists of a rubber ball and two metal parallel unions, and is mainly used for the connection of steel pipes, copper pipes and high-pressure pipes. The main materials of threaded rubber joints include chloroprene rubber, natural rubber and EPDM rubber. Its structure consists of a rubber double ball and a metal flat joint formed by vulcanization of the composite model of the inner layer, reinforcement layer and outer rubber layer. The middle double ball part can be added with a steel ring according to user needs, which has the advantages of high pressure resistance, good elasticity, large displacement deformation, good vibration and noise reduction effect, flexible installation and long service life.

Applicable media

water, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, finished oil, air, gas, steam and granular powder, etc.

Application areas

chemical, petrochemical, metallurgy, electric power, construction and other industries.

Product Detail

Threaded union rubber expansion joints are mainly composed of inner and outer rubber layers, cord layers (or reinforcement layers, usually using high-strength, aging-resistant materials such as nylon cords), wire rings and other structures.

The inner rubber layer is in direct contact with the medium, and the appropriate rubber material needs to be selected according to the properties of the medium.

The reinforcement layer provides the strength and stability of the joint.

The outer rubber layer mainly plays a protective role.

CUSTOMER

VOICE

WHAT A CLIENT SAY?

Threaded union rubber expansion joints can cope with various complex working conditions, such as high temperature, high pressure or complex media. In some large-scale engineering projects, the joints have successfully solved the severe pipeline pressure problem with their excellent elasticity and adaptability. Customers reported that after a long period of high-intensity operation, the joints are still in good condition, and there is almost no need to replace them. The threaded thread structure of the threaded rubber joint makes installation and disassembly easier and faster, greatly reducing the need for tools and personnel. Greatly shortened construction time and reduced labor costs.

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Application areas

The application areas of pipelines are very wide, mainly including municipal engineering, building water supply and drainage, industrial production, agricultural irrigation, new energy and other fields.

FAQ

Important things you should know

Common connection methods for threaded rubber expansion joints?

Flange connection, clamp connection, threaded connection, etc. Choose the appropriate connection method according to actual needs.

Does the type of medium affect the selection of joints?

The type of medium will affect the selection of joints. For example, if the medium is a special material such as acid, alkali, oil, high temperature, etc., the corresponding special resistant material rubber flexible joint should be selected.

How to choose the working pressure?

Choose the appropriate joint according to the working pressure of the pipeline. The commonly used threaded rubber flexible joints have pressure sizes of 1.0MPa/1.6MPa and 2.5MPa. If the instantaneous pressure of the pipeline is greater than the usual working pressure, a joint with a higher pressure than the working pressure should be selected.

What should be done if the pipeline displacement is greater than the compensation amount of the rubber flexible joint?

The number of joints should be increased to meet the displacement requirements.