Rubber Flexible Joint

Your Professional Rubber Flexible Joint Manufacturers

FOINBO, founded in 2014, is a fire equipment company that has been leading the way in providing reliable and state-of-the-art firefighting equipment to clients across various industries. Offering products at competitive prices is our ongoing pursuit. Our primary goal is to ensure that people, properties, and businesses are protected from the devastating effects of fire.

Quality Assurance: ISO 9001 certified; our 12-step inspection process ensures a defect rate of less than 0.3%.

Eco-Conscious: Fully compliant with RoHS/REACH; 100% biodegradable packaging by 2024.

Pre-sales Support: As a fire equipment provider, we proactively communicate with customers during the pre-sales process to understand their needs and requirements, offer professional advice and recommendations, and help them choose the most suitable products.

Benefits of Rubber Flexible Joint

Movement Compensation

One of the primary functions of a rubber flexible joint is to compensate for thermal expansion and contraction in piping systems. As the temperature of the fluid flowing through the pipes changes, the pipes expand or contract. The flexible joint absorbs these dimensional changes, preventing excessive stress on the pipes, valves, and other components, which could otherwise lead to leaks, cracks, or even system failure.

Vibration and Noise Reduction

In industrial processes, pumps, compressors, and other rotating equipment generate significant vibrations and noise. Rubber flexible joints act as effective vibration isolators, damping the transmission of mechanical vibrations from the equipment to the connected piping and structure. By reducing vibrations, these joints help minimize noise levels, enhance operator comfort, and protect sensitive equipment from vibration-induced damage.

Misalignment Correction

During installation or due to settlement of the supporting structure, pipes may become misaligned. A rubber flexible joint can accommodate small amounts of lateral, angular, and axial misalignment between connected pipes, ensuring a proper seal and preventing the development of excessive stress concentrations that could compromise the integrity of the system.

Shock Absorption

In systems subjected to sudden pressure surges, water hammer, or other transient forces, rubber flexible joints provide shock absorption capabilities. The flexible rubber material can deform temporarily to absorb the energy of the shock, protecting the piping and equipment from damage and reducing the risk of catastrophic failures.

Sealing and Leakage Prevention

The rubber material of the joint forms a reliable seal against the fluid being transported, preventing leaks and maintaining system efficiency. The flexibility of the joint also allows it to adapt to minor surface irregularities on the connecting flanges, ensuring a tight and leak-free connection.

Application of Rubber Flexible Joint

Water and Wastewater Systems
Rubber flexible joints are significantly employed in water and wastewater pipelines. They ease the pressures created by temperature changes and system vibrations. They help preserve pipeline integrity by thus reducing wear and leakages.

Chemical Processing
In chemical processing plants, these joints are commonly used for corrosive substance transport. Their resistance to chemicals makes them suitable for this application. They ensure the safe transfer of liquids and gases while preventing leaks and system damage.

HVAC Systems
These types of joints are critical in heating, ventilation, and air conditioning (HVAC) systems. They play an important role in ductwork and refrigerant pipelines. They help in vibration absorption caused by pumps and compressors, thus guaranteeing system efficiency while improving longevity.

Industrial Machinery
In industrial machinery, rubber flexible joints are used on rotating equipment like pumps and motors. The joints help minimize torsional vibrations, thus protecting equipment from damage. This prolongs the life of machinery and aids in smooth operation.

Construction
These joints are also used in construction. They are mostly applied in the installation of expansion joints in buildings and bridges. By accommodating movement due to temperature changes, they assist in preventing structural cracks and defects. This maintains the structural integrity of facilities over time.

Mining and Mineral Processing
These joints are useful in the mining and mineral processing industries, as they are employed in the transportation of slurries and abrasive materials. Their flexibility will enable them to withstand the wear and tear caused by these challenging environments. Additionally, they help absorb shocks from pumps and conveyors, thus ensuring system stability.

Rubber Joint Size Chart

SIZE	LENGTH	Movemont Capablllty
DN	F/F	Comp.	Ext.	Lateral	Angular
(mm)	(mm)	(mm)	(mm)	(mm)	(Degree)
40	175	10	20	20	30
50	175	10	20	20	30
65	175	10	20	20	30
80	175	10	20	20	30
100	225	15	30	25	30
125	225	15	30	25	30
150	225	15	30	25	30
200	325	20	40	30	30
250	325	20	40	30	30
300	325	20	40	30	30
350	350	20	40	30	30
400	350	20	40	30	30
450	350	25	45	30	30
500	350	25	45	30	30
600	350	25	45	30	30

Technical Data

Model	KXT-1	KXT-2	KXT-3
Working Pressure MPa(Kgf/cm2)	1(10)	1.6(16)	2.5(25)
Burst Pressure MPa(Kgf/cm2)	2(20)	3(30)	4.5(45)
Vacuum Degree KPa(mmHg)	53.3(400)	86.7(650)	100(750)
Suitable Temperature °C	-15~115 (-30~250 for special materials)
Suitable Medium	Air, Compressed Air, Fresh Water, Sea Water, Oil, Acid, Alkali etc.

Delivery

Selling units	Single item
Single package size	33X33.5X13.5 cm
Single gross weight	4.700 kg

Packaging & Shipping

productcate-560-210

productcate-554-403

FAQ

Q: Do you have any MOQ limit for valve order?

A: Low MOQ, 1pc for sample checking is available

Q: Can you do the design for us?

A: Yes.Please send us high resolution images,your logo and other materials needed . We will send you finished files for confirmation.

Q: What about the payment term?

A: T/T 30% deposit, balance payment after finished production before shipment. Or as discussed.

Q: Can I have my own Logo on the product?

A: Yes, you can send us your drawing and we can make your logo, but you have to bear their own the cost.

Q: What is a rubber expansion joint?

A: A rubber expansion joint is a flexible connector to absorb noise, shock, vibration, physical and thermal energy. Made of natural or synthetic elastomers it may be internally reinforced with fabrics and metal for strength and pressure resistance whilst metal reinforcement may be used externally for movement control.

Q: What is the difference between a flex joint and an expansion joint?

A: Compared to flexible connectors, bellows or expansion joints are designed to absorb pipe expansion. Since bellows have larger corrugations than flexible connectors, they are able to compress more and tend to be better at handling lateral movement to tolerate pipe misalignment.

As one of the leading rubber flexible joint manufacturers and suppliers in China, we warmly welcome you to wholesale cheap rubber flexible joint from our factory. All our products are with high quality and competitive price.

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