Stainless Steel Double Flange Bellows EPDM Rubber Expansion Joint

• Customization: Available
• After-sales Service: All The Time
• Connection: Flange
• Model NO.: EZO-PF9654
• Kind: Corrugated Compensator
• Type: Horizontal
• Head Code: Square
• Material: Nr. NBR, EPDM, PTFE
• Surface Treatment: Epoxy
• Customized: Customized
• Certification: ASTM, ANSI, DIN, BS, En, ISO
• Warranty: 12 Months
• Application: Power Generation Stations/Oil & Gas/Desalination/C
• Package: Cartons, Pallet, Cases
• Production Period: in 15-60 Days Upon Order Quantity
• Payment Term: L/C, T/T, Wu, etc.
• Certificate: ISO, PED
• Closest Port for Shipment: Ningbo
• Transport Package: Cartons, Pallet, Cases
• Specification: DN32-600
• Trademark: EZO
• Origin: China
• HS Code: 8421219990
• Production Capacity: 500pic/Month
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 10.000kg
• Lead Time: 7 days (1 - 10 Pieces) ; To be negotiated ( > 10 Pieces)

Product Description

 

 Stainless steel double flange bellows EPDM rubber expansion joint

The Stainless Steel Double Flange Bellows EPDM Rubber Expansion Joint is a flexible pipeline component designed to absorb movement, vibration, and thermal stress in fluid systems. It combines a corrosion-resistant stainless steel flange structure with an EPDM rubber bellows core, allowing axial, lateral, and angular displacement without compromising sealing performance. The EPDM rubber offers excellent elasticity, aging resistance, and compatibility with water, air, steam, and mild chemicals. Double flange connections ensure secure installation and uniform load distribution, improving long-term stability. This product effectively reduces mechanical stress on pipelines, protects connected equipment, and enhances overall system durability, making it a reliable solution for demanding industrial environments.

This expansion joint is typically installed between rigid pipeline sections, pumps, valves, heat exchangers, or other fixed equipment in piping systems. At this position, it serves to compensate for thermal expansion and contraction, absorb vibration and noise generated by rotating machinery, and correct minor installation misalignments. By isolating movement and stress at connection points, it prevents flange damage, leakage, and fatigue failure of pipes. In this location, the joint ensures smooth system operation, extends equipment service life, and maintains stable flow conditions under changing pressure and temperature conditions.

Size Range: DN15-DN300 (1/2"-12")
Pressure Rating: up to 25 bar
Temperature Range: -196°C to +450°C
Material: 304 / 316L stainless steel
Flange Standard: ANSI / DIN / JIS
Length: Customized on request
Braid Layer: Single or double stainless steel wire braid (optional)

Quality guarantee of 3 years

ISO 9001, FDA, SGS approved materials

7-10 days fast delivery on urgent requirements

20 years' Rich exporting experience to make you easy and happy with custom work

 

Product Description

Stainless steel double flange bellows EPDM rubber expansion joint:

• The working principle relies on the elastic deformation of the EPDM rubber bellows, which expands and compresses under pipeline movement caused by temperature changes, pressure fluctuations, or mechanical vibration. The stainless steel double flanges securely anchor the joint, ensuring controlled flexibility while maintaining a reliable, leak-free connection during continuous operation.

• By allowing axial, lateral, and angular displacement, the expansion joint effectively absorbs thermal expansion and contraction within the pipeline. This prevents excessive stress from transferring to rigid pipes, valves, or equipment, reducing the risk of cracking, deformation, or flange loosening under long-term high-temperature or variable-load conditions.

• The EPDM rubber bellows acts as a vibration and noise isolation element, dampening oscillations generated by pumps, compressors, or rotating machinery. This working effect significantly lowers structural resonance and sound transmission through the piping system, improving operational stability and creating a quieter, more controlled industrial environment.

• During system pressure changes, the flexible bellows balances internal forces, enabling smooth pressure adjustment without sudden shock loads. This function protects connected components from pressure surges, enhances sealing performance, and ensures steady fluid flow, even in systems with frequent start-stop cycles or fluctuating operating parameters.

Product Parameters

Packaging & Shipping

FAB

Feature	Advantage	Benefit
Stainless Steel Double Flange Design - Equipped with dual stainless steel flanges for strong, stable pipeline connections. EPDM Rubber Bellows Core - High-quality EPDM rubber bellows provide excellent flexibility and sealing performance. Axial, Lateral, and Angular Compensation - Designed to absorb multi-directional pipe displacement caused by thermal expansion. Corrosion and Weather Resistance - EPDM material offers resistance to water, steam, ozone, and aging. Pressure-Resistant Structure - Reinforced bellows construction ensures safe operation under rated pressure conditions.	Effective Vibration and Noise Reduction - Flexible bellows minimize vibration transmission in piping systems. Improved Pipeline Protection - Absorbs stress and movement, preventing damage to pipes and equipment. Reliable Sealing Performance - EPDM rubber ensures leak-free operation over long service periods. Easy Installation and Replacement - Double flange connection allows quick assembly and maintenance. Wide Media Compatibility - Suitable for water, air, mild chemicals, and industrial fluids.	Extends Pipeline Service Life - Reduces mechanical stress, lowering the risk of cracks and failures. Enhances System Stability - Flexible compensation maintains alignment and smooth flow. Reduces Maintenance Costs - Durable materials and vibration control decrease repair frequency. Improves Operational Safety - Secure sealing and stress absorption protect system integrity. Adaptable to Various Industries - Ideal for HVAC, water treatment, power plants, and industrial piping systems.

Product Recommendations

Company Profile

 

 

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Welcome to check our other products.
 

Ezo stainless steel company was started in 2007. Located in the stainless steel industry zone, Wenzhou, China.

Ezo stainless steel is the branch company of Joneng valves co.,ltd

Totally 145nos of workers and the factory Covers 6800m2. Till now, we have 50 sets of imported and local brand CNC machines ; Plus, we have 2 sets of automatic machining unit.

To assure better quality, we have the full inspecting quality control equipment: 2nos Ra roughness instrument, 3nos stainless steel spectrometer, numbers of roundness instrument, numbers of thickness instrument, numbers of radius instrument, 3 nos pressure testing center.

Ezo stainless steel services for food, beverage, dairy, chemical, bioth, pharmaceutical, chemical, oil and etc industries.

Ezo stainless steel customers are from 80 different countries.After so many years, Ezo knows more about different requirements from different countries' customers.

Ezo stainless steel believes in "What we say, what we do". We always believe honesty and responsibility is the only way leading to long term business relationship. Trying our best for customers and put ourselves into customers' shoes.

Our commitment " Never let customers leave us because our poor service".

Making business with us, making friends with us.

About us
EZO was established in July 2007, strategically situated in Wenzhou, China. Boasting a team of approximately 100 skilled workers, our expansive factory spans 6800m2, dedicated to delivering exceptional valve and pipe solutions with precision and excellence.
Under the esteemed Joneng enterprise, we proudly operate three specialized manufacturing facilities. Jiayuan excels in producing elbow, tee, and reducer fittings in both sanitary and schedule grades; Lingdong focuses on precision-engineered ferrules, unions, sight glasses, and butterfly valves using advanced CNC technology; while Ezo specializes in designing high-quality manhole covers and small tanks to meet diverse industrial needs.

We mainly manufacture:
Stainless steel storage tank, mixing tank, extracting tank, evaporator, concentration units, fermenting tank, plate sterilizer, CIP cleaning system, heat exchangers,offering comprehensive solutions to meet your varying operational demands.
Stainless steel sanitary manways ( Pressure type manway, non pressure manway, round manway, rectangular manway,engineered for seamless connectivity and outstanding performance.
Stainless steel sanitary filters ( Y filter, inline filter, L filter, housing filter,meticulously designed for reliability and precision in fluid filtration systems.
Stainless steel centrifugal pumps, CIP pumps, emulsifying pumps, and rotary pumps, ensuring efficient and effective fluid handling and processing across diverse industries.

 

 

Harnessing the prowess of three advanced PMI machines, we scrupulously assess the chemical composition of raw materials, semi-finished, and final products, preemptively averting potential mix-ups, thereby safeguarding quality consistency.
Leveraging an advanced roughness measuring machine, we meticulously verify the surface quality of our products, ensuring they consistently meet the pinnacle of precision and excellence in finish.

International standards
Our products are expertly crafted to align with SMS, DIN, AS, BS, BPE, JIS, ISO, ANSI B16.5, ASME, and other international standards. We also offer the flexibility of customized solutions. Our high-quality products have successfully reached over 100 countries, including Europe, America, the Middle East, Australia, Turkey, Iran, and Thailand, showcasing our global presence and commitment to excellence.
Wenzhou Ezo stainless steel Co., Limited proudly extends its reach to a diverse array of countries and regions including Europe, America, the Middle East, Australia, Turkey, Iran, Thailand, and more, amassing a remarkable presence in over 100 countries worldwide.
Ezo stands as a paragon of quality assurance, adorned with the prestigious CE, PED, and ISO 9001 certifications, which exemplify our unwavering dedication to superior quality management. Our products also adhere to FDA standards, reinforcing trust and reliability at every step.

Extensive inventory

Our extensive inventory of manhole covers and small tanks features an array of stainless steel options: storage tank, mixing tank, extracting tank, evaporator, concentration units, fermenting tank, plate sterilizer, CIP cleaning system, heat exchangers,sanitary filters sanitary pump,sanitary manholes,empowering us to deliver goods promptly and with unparalleled efficiency.

3-year guarantee and 24 hours 
concerns

Our pledge to excellence is embodied in our promise of swift 24-hour resolution for any quality complaints, nurturing customer satisfaction while driving continuous enhancement.

At Wenzhou Ezo stainless steel Co., Limited, we extend an unmatched 3-year guarantee on all stainless steel components, offering you peace of mind. Should any quality issues surface with our valves and fittings, please do not hesitate to contact us. We assure a swift response with action initiated within 24 hours to resolve any concerns effectively.

Welcome to the factory
√ With 17 prolific years of dedicated expertise in the industry, we embody an unwavering commitment to quality and innovative solutions.

√ Spanning an impressive 6800m2, our state-of-the-art facility is adeptly equipped to manage diverse production demands with flawless efficiency.

√ Our skilled workforce of 100 employees fuels our engine of excellence and propels our growth trajectory.

√ Thriving in over 100+ countries, our expansive global reach is a testament to the trust and satisfaction our international clientele repose in us.

√ With a formidable network of 1000+ partners worldwide, our collaborative endeavours continue to drive success and shared aspirations.

 

OUR PRODUCTION CAPACITY
 

Product Range	Stainless steel storage tank, mixing tank, extracting tank, evaporator, concentration units, fermenting tank, plate sterilizer, CIP cleaning system, heat exchangers stainless steel sanitary filters ( Y filter, inline filter, L filter, housing filter Stainless steel Sanitary pump ( stainless steel sanitary centrifugal pump, rotary lobe pump, CIP pump) Stainless steel sanitary manways ( Pressure type manway, non pressure manway, round manway, rectangular manway
Year Established	2007
Factory Size in Square Meters	6800M2
NO. OF TOTAL STAFF	145
Production Capital	10 000 000 USD
Detail capacity/ MONTH	TANKS	50nos
	Manhole covers	500nos
	FILTERS	600nos
	PUMPS	400nos
Investment in Manufacturing Equipment	750000usd
OUR EQUIPMENTS	29 nos of LG Mazak CNC Machines
	4 nos of local CNC machines
	2 nos of automatic CNC center
	12 nos of plain lathe
	4 nos of press
	3 nos of cutting machine
	3 nos of chamfering machine
	40 nos of polishing machine
	12 nos of grinding machine
	3 nos of laser marking machine
	3 nos of pressure testing machine
	1 nos of temperature testing machine
	3 nos of spectro instrument
	2 nos of surface roughness device
Primary Competitive Advantages	Strict inspection , honest business way, fast revert on order problem
OEM Services Provided	yes
Design Service Offered	yes
Export Percentage	80%
MAIN MARKET	USA, Germany, Hungary, Canada, Thailand, Holland, England, South Africa,Indonesia, Saudi, India, New Zealand, Australia, Middle East...
Own Brand Name	EZO

Certifications

FAQ

 

1. Are you a trading company or factory? 
We are a manufacturer factory and we also have our own exporting license. 

2. Do you have certificate? 
Yes, ISO, FDA, LFGB, CE, PED certificate. We also have some patents in design. 

3. How do you control the quality? 
In quality control, the most important is to avoid material mixing. 
In our factory, 3 spectro PMI machines are used in raw material warehouse, production plant, dispatch plant. 
Pressure inspecting machine, PMI machines, RA roughness spector, hardness testing machine...All machines help in inspection. 
2 staff inspect during production in different sections
5 staff inspect the finished productions to avoid shortage, poor quality, mixing chemical...

4. How many factories do you have?
Under the esteemed Joneng enterprise, we proudly operate three specialized manufacturing facilities. 
Jiayuan excels in producing elbow, tee, and reducer fittings in both sanitary and schedule grades;
Lingdong focuses on precision-engineered ferrules, unions, sight glasses, and butterfly valves using advanced CNC technology; 
while Ezo specializes in designing high-quality manhole covers and small tanks to meet diverse industrial needs.

5. If there is any quality problem, how do you solve it? 
We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem. 
Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition. 

6. How long is your delivery time? 
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends. 

7. Warranty time? 
3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers. 

8. Why trust in us? 
14 years in this industry. It makes us professional. Good credit in this market. 
All of our machines are the assurance of our responsibility. 

9. Free sample? 
Free samples can be provided for first cooperation under sincere cooperation. 

10. What is the MOQ? 
1PCS MOQ is welcome for starting cooperatoon

11. Material certificate? 
Material certificaite, mill certificate, pressure testing certificate, roughness certificate, measure certificate, RT certificate, ...Can be available, please declare when inquiry us. 

12. More questions are appreciated.