Product Description

EPDM Flanged Bellows Compensator  Connector Coupling

The Flanged Rubber Expansion Joint is a versatile and durable solution for a wide range of piping applications. Made from high-quality rubber and reinforced with steel flanges, this expansion joint is designed to withstand high pressure, temperature changes, and lateral movements. It is ideal for use in water treatment plants, CHINAMFG systems, chemical processing plants, and other industrial applications where flexibility and reliability are critical. The flanged design allows for easy installation and ensures a secure and leak-free connection. With its excellent resistance to corrosion, abrasion, and chemicals, this expansion joint offers a long service life and low maintenance costs. Available in a variety of sizes and configurations, the Flanged Rubber Expansion Joint is an essential component for any piping system.If you need to buy expansion joints, come to HangZhou FLUIDO, we have over 20 years of experience.

 

 

 

Material list

NO	NAME	Material
1	Cover	NR,NBR,EPDM
2	Reinforcing	Nylon
3	Tube	NR,NBR,EPDM
4	Retain rings	Steel
5	Flange	Carbon steel

Technical conditions

Working Pressure    MPa(Kgf/cm2)	1(10)	1.6(16)	2.5(25)
Explosion Pressure MPa(Kgf/cm2)	3 (30)	4.8 (48)	5.5 (55)
Vacuum MPa(Kgf/cm2)	53.3(400)	86.7(650)	100(750)
Applicable Temperature ºC	-15-115, it can be -30-250 for special condition.
Applicabe Medium	Air, compressed air, water,sea water, steam, oil, acid and alkali, etc.

 

Main joint dimension

Size	Inch	Length	Extension	Compression	Horizonal	Angular
DN32	1 1/4″	95	6	9	9	15°
DN40	1 1/2″	95	6	10	9	15°
DN50	2″	105	7	10	10	15°
DN65	2 1/2″	115	7	13	11	15°
DN80	3″	135	8	15	12	15°
DN100	4″	150	10	19	13	15°
DN125	5″	165	12	19	13	15°
DN150	6″	180	12	20	14	15°
DN200	8″	210	16	25	22	15°
DN250	10″	230	16	25	22	15°
DN300	12″	245	16	25	22	15°
DN350	14″	255	16	25	22	15°
DN400	16″	255	16	25	22	15°
DN450	18″	255	16	25	22	15°
DN500	20″	255	16	25	22	15°
DN600	24″	260	16	25	22	15°
DN700	28″	260	16	25	22	15°
DN800	32″	260	16	25	22	15°
DN900	36″	260	16	25	22	15°
DN1000	40″	260	18	26	24	15°

 

Features
1. The flexible rubber expansion joint is of small volume, light weight, good flexibility and convenient installation and maintenance ; 

2. The flexible rubber expansion joint has transverse displacement, axial displacement and angular displacement and not restricted by inconsistent pipeline and unparallel flange in installation; 

3. The flexible rubber expansion joint reduces vibration and noise;

4. The flexible rubber expansion joint with seamless inside and resistance to high temperature which is developed by our company can prevent the corrosive medium from corroding the inner wall more efficiently in the pipeline of high temperature resistance, acid and alkali resistance and oil resistance.

Detailed Photos

 

Our Factory

 

 

 

Application

Based on its excellent overall performance, the flexible rubber expansion joint is widely used in the chemical industry, construction, drainage, oil industry, light and heavy industry, refrigeration industry, sanitary system, plumbing system, firefighting, and power electrics, such as the connection with pump or valve and pipeline with vibration or large temperature changes.

Company Profile

 

 

Our Advantages

 

1)Over 20 years of experience on manufacturing and exporting pipeline products.
Over 10 years shop on Made-In-China. Long history means stable,professional and reliable .

2)Industry leader:
Our Factory has been specilized in Pipeline Products since 2004. With decades of development, CHINAMFG possesses 20 engineers, 200 experienced workers and 25 professional sales team and has supplied pipeline products, solution and services to over 50 countries.Quality is strictly Controlled and guaranteed.

3)Large Productivity 
Our Factory’ productivity is large and stock for some of the pipe fittings is also available. so the mass production lead time is short.

4)One-stop shopping
We can supply a series of pipeline products include buttwelding fittings, forged fittings, valves,flanges ,rubber fittings ,clamps etc., standard and even non-standard OEM
products.

5)VIP Service
20 professional technical engineers and a 25-people sales team gaurantee the quality and service.

6)OEM is also available
 

FAQ

Q1:What certificate do you have?

A: We have ISO 9001, CE certificate.

Q2. Can I get free samples?
A: Yes, The free samples can be offered for free.

Q3.What‘s the MOQ of your products?
A:Normally for 1 Ton .For trial order it can be small.

Q3. Can I have my own Logo on the product?
A: Yes, Simple logo design is available based on not small order quantity.

Q4: Can I have my own customized product?
A: Yes, your customized requirements for color, size, mark, etc.

Q5: Can you produce the products according to my own drawing?
A: Yes, we can produce the products according to your drawing.

Q6: How long is your delivery time?
A: Generally it is about 30-45days depends on the order quantity.

Q7:What’s your product range?
A:Forged Pipe Fitting,Butt welding Pipe Fitting,Pipe Clamps,Ductile Iron Groove Pipe Fitting,OEM Parts,Valves etc.,

Q8:What kinds of OEM parts can you serve?
A:CNC machining parts,Bending parts, Forging parts, Stamping parts and Casting parts etc.,

Q9:How Your Factory Control the Quality?
A: We control the quality since the Material arrives, we have a workshop QC responsible for each product line to check the product dimensions and other details during 1 by 1 producing process, inspection QC do spot check for each batch in every day and package workers do 100% product appearance inspection 1 by 1 when they package the parts into the carton. 

Welcome to contact us for more information!
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Are there Specific Temperature and Torque Limits for Different Bellows Coupling Materials?

Bellows couplings are available in a variety of materials, each with its own temperature and torque limits. The choice of material depends on the specific application requirements, including environmental conditions, operating temperatures, and torque demands. Here are some commonly used bellows coupling materials and their respective temperature and torque limits:

1. Stainless Steel: Stainless steel bellows couplings are widely used due to their excellent corrosion resistance and high strength. They can operate in a wide temperature range, typically from -40°C to 400°C (-40°F to 752°F). The torque limits for stainless steel bellows couplings vary based on their size and construction but can range from a few Nm to several hundred Nm.
2. Aluminum: Aluminum bellows couplings are lightweight and offer good corrosion resistance. They are suitable for applications with lower torque requirements. The temperature limits for aluminum couplings range from -30°C to 150°C (-22°F to 302°F), and the torque limits generally range from a few Nm to around 50 Nm.
3. Brass: Brass bellows couplings are known for their electrical conductivity and are often used in applications where electrical isolation is required. They have temperature limits similar to aluminum couplings, ranging from -30°C to 150°C (-22°F to 302°F), and torque limits comparable to aluminum couplings.
4. Titanium: Titanium bellows couplings offer exceptional strength and corrosion resistance, making them suitable for demanding applications. They can operate in a temperature range of -50°C to 300°C (-58°F to 572°F), and their torque limits range from a few Nm to several hundred Nm.
5. Inconel: Inconel is a high-temperature alloy that provides excellent performance in extreme heat and corrosive environments. Inconel bellows couplings can operate in temperatures from -60°C to 600°C (-76°F to 1112°F) and have high torque capacities, ranging from a few Nm to over a thousand Nm.
6. Plastics: Certain plastic materials, such as PEEK (Polyether Ether Ketone), are used for bellows couplings in specialized applications. Plastic couplings offer lower torque capacities compared to metal couplings but can operate in a temperature range of -30°C to 250°C (-22°F to 482°F).

It is essential to consult the manufacturer’s specifications and guidelines to select the appropriate bellows coupling material for your specific application. Choosing the right material ensures that the coupling can withstand the operating conditions and delivers reliable performance throughout its service life.

Can Bellows Couplings Be Used in Applications Requiring Electrical Isolation Between Shafts?

Yes, bellows couplings can be used in applications that require electrical isolation between shafts. The bellows coupling’s design inherently provides electrical isolation due to the absence of physical contact between the metal components. This feature makes bellows couplings well-suited for scenarios where electrical continuity must be maintained or prevented between the connected shafts.

In certain industrial setups, such as in motor-driven systems or equipment utilizing sensitive electronics, maintaining electrical isolation is crucial to prevent interference or electrical currents from flowing between the driving and driven shafts. In such cases, a bellows coupling acts as an ideal solution because the bellows element, made of non-conductive material, separates the two shaft ends while still transmitting torque.

Additionally, the material used for the bellows element can be selected to ensure optimal electrical insulation properties. For example, using materials like stainless steel or aluminum for the bellows ensures high electrical resistance and prevents any current leakage or conduction through the coupling.

By providing electrical isolation, bellows couplings help in safeguarding sensitive electronic components, minimizing the risk of electrical damage or interference, and ensuring the reliability and performance of the overall system.

What are the Different Types of Bellows Couplings Available, and Their Respective Applications?

There are several types of bellows couplings available, each designed to suit specific applications and requirements. Some of the most common types include:

• Single Bellows Coupling: This type of bellows coupling consists of a single bellows element and is suitable for applications with moderate misalignment and torsional stiffness requirements. It is commonly used in robotics, automation, and general motion control systems.
• Double Bellows Coupling: The double bellows coupling features two bellows elements with an intermediate shaft in between. This design offers higher torsional stiffness and increased angular misalignment capacity. It is often used in precision positioning equipment and applications requiring higher torque transmission.
• Flexible Beam Coupling with Bellows: This type of coupling combines the flexibility of a beam coupling with the compensating capability of a bellows coupling. It can handle moderate misalignments and provides a good balance between flexibility and torsional stiffness. It finds applications in medical devices, optical systems, and semiconductor equipment.
• Torsionally Rigid Bellows Coupling: As the name suggests, this coupling type offers exceptional torsional stiffness, making it suitable for applications where precise motion control and low torsional backlash are critical. It is commonly used in CNC machines, high-speed spindles, and other high-precision systems.
• Miniature Bellows Coupling: This type is specifically designed for applications with limited space and where low inertia is crucial. It is commonly used in small robotics, miniature positioning stages, and micro-machining systems.
• High-Temperature Bellows Coupling: This specialized coupling can withstand elevated temperatures, making it suitable for applications in harsh environments, such as aerospace, exhaust systems, and certain industrial processes.

The choice of bellows coupling type depends on the specific requirements of the application. Factors such as misalignment compensation, torsional stiffness, torque capacity, space constraints, and environmental conditions play a crucial role in selecting the appropriate coupling type.

When selecting a bellows coupling, it is essential to consider the coupling’s torque ratings, allowable misalignments, and operating conditions to ensure optimal performance and reliability. Consulting with coupling manufacturers or engineering experts can help in making an informed decision based on the specific needs of the mechanical power transmission system.

editor by CX 2024-01-12