Vasu Pharmatech

Fine Bubble Disc Diffusers

SPECIFICATION
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SHAPE

DISC TYPE

SIZE

9" & 12"

MOC OF MEMBRANE

EPDM / SILICONE

MAX. PRESSURE ALLOWED

1.5kg/cm2

AIR FLOW RANGE

1-5 m3/hr & 4-10 m3/hr

Bubble size

0.5 - 0.8 mm

overview

Fine Bubble Disc Diffusers

A fine bubble disc diffuser is an aeration device that releases very small-sized air bubbles into water. The bubble size usually ranges between 0.8 to 1.9 mm, which provides a much higher oxygen transfer efficiency compared to larger bubbles.

These diffusers are widely used in sewage treatment plants (STP), effluent treatment plants (ETP), aquaculture, and industrial wastewater treatment systems. By supplying fine bubbles, they help microorganisms break down organic matter effectively, reducing pollution and ensuring compliance with discharge norms.

Unlike coarse bubble systems, fine bubble disc diffusers cover a larger surface area of water, ensuring more oxygen dissolves in less time, thereby reducing energy consumption.

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Our Range of Fine Bubble Disc Diffusers

9 Inch Silicone Fine Bubble Disc Diffuser

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Product Brochure

Key Specifications

Fine Bubble Disc Diffusers by Vasu Pharmatech are efficient aeration devices used in wastewater treatment plants. Also known as Disc Type Fine Bubble Diffuser, Fine Bubble Air Disc Diffuser, and supplied by reliable Fine Bubble Disc Diffuser Manufacturers and Fine Bubble Disc Diffuser Suppliers, these diffusers are designed to deliver high oxygen transfer with low energy consumption.

  • MOC OF MEMBRANE —  SILICONE
  • BASE AND RING — ABS
  • CONNECTION — 3/4″ BSP MALE THREAD
  • AIR FLOW RANGE — 1 – 5 m³/hr
  • PERFORATION SIZE — 0.5mm
  • BUBBLE SIZE — 0.5 – 0.8 mm
  • MAX. PRESSURE ALLOWED — 1.5 kg/cm²
  • SIZE — 9 Inch
  • BRAND — Vasu Pharmatech

Fine Bubble Disc Diffusers feature a strong PP base with a high-quality membrane for durable performance. The fine bubble design ensures high oxygen transfer with low power consumption, while the check valve prevents backflow during operation. Ideal for aeration tanks, STP, and ETP applications.

12 Inch Silicone Fine Bubble Disc Diffuser

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Product Brochure

Key Specifications

Fine Bubble Disc Diffusers by Vasu Pharmatech are efficient aeration devices used in wastewater treatment plants. Also known as Disc Type Fine Bubble Diffuser, Fine Bubble Air Disc Diffuser, and supplied by reliable Fine Bubble Disc Diffuser Manufacturers and Fine Bubble Disc Diffuser Suppliers, these diffusers are designed to deliver high oxygen transfer with low energy consumption.

  • MOC OF MEMBRANE —  SILICONE
  • BASE AND RING — ABS
  • CONNECTION — 3/4″ BSP MALE THREAD
  • AIR FLOW RANGE — 4 – 10 m³/hr
  • PERFORATION SIZE — 0.5mm
  • BUBBLE SIZE — 0.5 – 0.8 mm
  • MAX. PRESSURE ALLOWED — 1.5 kg/cm²
  • SIZE — 12 Inch
  • BRAND — Vasu Pharmatech

Fine Bubble Disc Diffusers feature a strong PP base with a high-quality membrane for durable performance. The fine bubble design ensures high oxygen transfer with low power consumption, while the check valve prevents backflow during operation. Ideal for aeration tanks, STP, and ETP applications.

9 Inch EPDM Fine Bubble Disc Diffuser

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Product Brochure

Key Specifications

9 Inch EPDM Fine Bubble Disc Diffusers by Vasu Pharmatech are designed for efficient and reliable aeration in wastewater treatment plants. These Fine Bubble Disc Diffusers deliver high oxygen transfer efficiency with uniform bubble distribution, making them suitable for STP, ETP, and industrial aeration tanks.

  • MOC OF MEMBRANE —  EPDM
  • BASE AND RING — ABS
  • CONNECTION — 3/4″ BSP MALE THREAD
  • AIR FLOW RANGE — 1 – 5 m³/hr
  • PERFORATION SIZE — 0.5mm
  • BUBBLE SIZE — 0.5 – 0.8 mm
  • MAX. PRESSURE ALLOWED — 1.5 kg/cm²
  • SIZE — 9 Inch
  • BRAND — Vasu Pharmatech

Manufactured with a durable PP base and EPDM membrane, these diffusers offer long life and stable performance. The external check valve prevents backflow during ON/OFF operations, while 0.5 mm perforation ensures uniform fine bubble distribution. Available in 9″ and 12″ sizes with an airflow range of 1–5 m³/hr, they are ideal for biological wastewater treatment.

12 Inch EPDM Fine Bubble Disc Diffuser

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Product Brochure

Key Specifications

12 Inch EPDM Fine Bubble Disc Diffusers by Vasu Pharmatech are designed for efficient and reliable aeration in wastewater treatment plants. These Fine Bubble Disc Diffusers deliver high oxygen transfer efficiency with uniform bubble distribution, making them suitable for STP, ETP, and industrial aeration tanks.

  • MOC OF MEMBRANE —  EPDM
  • BASE AND RING — ABS
  • CONNECTION — 3/4″ BSP MALE THREAD
  • AIR FLOW RANGE — 4 – 10 m³/hr
  • PERFORATION SIZE — 0.5mm
  • BUBBLE SIZE — 0.5 – 0.8 mm
  • MAX. PRESSURE ALLOWED — 1.5 kg/cm²
  • SIZE — 12 Inch
  • BRAND — Vasu Pharmatech

Manufactured with a durable PP base and EPDM membrane, these diffusers offer long life and stable performance. The external check valve prevents backflow during ON/OFF operations, while 0.5 mm perforation ensures uniform fine bubble distribution. Available in 9″ and 12″ sizes with an airflow range of 4–10 m³/hr, they are ideal for biological wastewater treatment.

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Technical Specifications of Vasupharmatech Fine Bubble Disc Diffuser

SpecificationDetails
ShapeDisc Type
Size9″ & 12″
Membrane Material (MOC)EPDM / Silicone
Max Pressure Allowed1.5 kg/cm²
Air Flow Range1-5 m3/hr  &  4-10 m3/hr​
Bubble Size0.5 – 0.8 mm

Types of Disc Diffusers

When discussing aeration, it’s important to understand the different types of diffusers available:

1. Fine Bubble Disc Diffuser
  • Produces small bubbles (0.8–1.9 mm)
  • High oxygen transfer efficiency
  • Energy-saving solution
  • Best suited for STP and ETP plants
2. Coarse Bubble Disc Diffuser
  • Produces larger bubbles (3–12 mm)
  • Provides mixing rather than efficient oxygen transfer
  • Suitable for applications where clogging is an issue
  • Lower efficiency compared to fine bubble diffusers
3. Membrane Disc Diffuser
  • Uses EPDM or silicone membranes
  • Long life with anti-clogging design
  • Flexibility in operation
  • Available in both fine bubble and coarse bubble designs
4. Disc Diffuser Aerator
  • Can be installed in grids at the bottom of tanks
  • Ensures uniform bubble distribution
  • Available in different sizes and materials
  •  
Vasu pharmatech

Fine Bubble Disc Diffuser vs Coarse Bubble Disc Diffuser

FeatureFine Bubble Disc DiffuserCoarse Bubble Disc Diffuser
Bubble Size0.5 – 0.8 mm4 – 8 mm
Oxygen Transfer EfficiencyHighLow
Energy ConsumptionLower (energy-saving)Higher
Mixing CapacityModerateHigh
Clogging ResistanceModerate (requires maintenance)High
Best Used ForSTP, ETP, aquacultureHigh-solid wastewater treatment

Applications of Fine Bubble Disc Diffusers

  • Fine bubble disc diffusers are versatile and widely used in different industries. Some of the common applications include:

    1. Sewage Treatment Plants (STP)
    • Used in municipal wastewater treatment
    • Helps in aerobic digestion of organic matter
    • Provides consistent aeration across tanks
    2. Effluent Treatment Plants (ETP)
    • Essential for treating industrial effluents
    • Works with biological treatment methods
    • Reduces harmful pollutants before discharge
    3. Aquaculture
    • Maintains dissolved oxygen levels for fish and shrimp farming
    • Promotes healthy aquatic life
    • Reduces water stagnation
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4. Industrial Wastewater Treatment
  • Ideal for food processing, textile, chemical, and pharmaceutical industries
  • Reduces COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand)
  • Ensures compliance with pollution control norms

Benefits of Fine Bubble Disc Diffusers

Investing in EPDM fine bubble disc diffusers comes with multiple advantages:

  • High Oxygen Transfer Efficiency: Small bubble size ensures maximum oxygen dissolution.
  • Energy Savings: Reduced blower load and electricity consumption.
  • Durability: EPDM/Silicone membranes last longer, even in tough conditions.
  • Uniform Aeration: Even bubble distribution improves biological performance.
  • Cost-Effective: Long-term savings due to reduced maintenance and energy bills.
  • Scalability: Can be installed in small STPs or large industrial plants.
Fine Bubble Disc Diffusers

Factors Affecting Fine Bubble Diffuser Price

When purchasing a fine bubble diffuser, the price may vary based on several factors:

  • Size of Disc Diffuser – 9″ vs. 12″
  • Membrane Material – EPDM or Silicone
  • Flow Rate Requirements
  • Quantity Ordered – Bulk orders may reduce per-unit cost
  • Brand & Quality – Reliable manufacturers like Vasupharmatech provide long-lasting diffusers with warranty

While low-cost options may seem attractive initially, they often fail early due to membrane tearing or clogging. Hence, investing in a quality diffuser saves more in the long run.

Why Choose EPDM Fine Bubble Disc Diffuser?

Why EPDM is the most preferred membrane material for fine bubble diffusers:

  • Resistant to chemicals, oils, and UV exposure – Performs well in harsh environments where ordinary rubber fails.

  • Durable under continuous operation – Maintains strength and flexibility even during 24/7 use, giving longer service life.

  • Provides consistent bubble size – Ensures efficient oxygen transfer and better aeration performance.

  • Lower chances of hardening and cracking – Does not stiffen quickly, reducing cracks, leaks, and maintenance.

For more demanding environments:

  • Silicone membranes – Highly flexible, withstand extreme temperatures, and deliver stable, long-lasting performance.

Why Industries Prefer Vasupharmatech Fine Bubble Disc Diffusers

Vasupharmatech has established itself as a trusted supplier of disc diffuser aerators for STP and ETP projects. Here’s why industries prefer Vasupharmatech:

  • Superior Quality: Manufactured with EPDM and silicone membranes for longer durability.
  • Proven Efficiency: High oxygen transfer with optimized bubble size.
  • Wide Range: Available in 9-inch and 12-inch sizes, suitable for different applications.
  • Technical Expertise: Designed to handle 0–20 m³/hr air flow under 1.5 kg/cm² pressure.
  • Customization: Tailored solutions based on project requirements.
  • Global Reach: Reliable coarse bubble disc diffuser exporter as well, serving both domestic and international clients.

Practical Example: Fine Bubble Disc Diffuser in STP

Imagine a municipal sewage treatment plant struggling with high energy bills and poor effluent quality. By switching from coarse bubble systems to fine bubble disc diffusers, the STP was able to:

  • Increase oxygen transfer efficiency by 40%
  • Reduce blower energy consumption by 30%
  • Improve COD and BOD removal efficiency
  • Extend diffuser life due to durable EPDM membranes

This real-world application highlights why fine bubble diffusers are a smart investment for wastewater treatment facilities.

Conclusion

A fine bubble disc diffuser is not just an aeration tool—it is the backbone of efficient, reliable, and sustainable wastewater treatment. From municipal STPs to industrial ETPs, these diffusers provide unmatched oxygen transfer efficiency, reduce operating costs, and improve overall system performance.

By choosing Vasupharmatech fine bubble air diffusers, you get:

  • Trusted quality with EPDM and silicone membranes
  • High-performance disc diffuser aerators
  • Long-term savings on energy and maintenance
  • Reliable support from a leading fine bubble disc type diffuser manufacturer and exporter

If you’re looking for the perfect balance of performance, durability, and cost-effectiveness, Vasupharmatech offers the ideal solution for your aeration needs.

Upgrade your STP/ETP system today with Vasupharmatech fine bubble diffusers and experience efficient wastewater treatment like never before.

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About The Author

Lalit Nankani
Managing Partner, Vasu Pharmatech

Lalit Nankani has over 23 years of experience in the filtration and water treatment industry. He leads Vasu Pharmatech, a trusted name in making PP Filter Press Systems, MBBR Filter Media, and other filtration products.

Under his leadership, the company has delivered high-quality solutions to many industries like pharmaceuticals, chemicals, food and beverage, textiles, and wastewater treatment. Lalit believes in providing strong, easy-to-use, and cost-effective systems that help businesses clean and reuse water.

1. What is a disc diffuser?

It is an aeration device that releases small bubbles into water to increase oxygen transfer during treatment.

Air is pushed through a flexible membrane, creating uniform bubbles that help microorganisms break down organic matter.

They release very tiny bubbles, which dissolve more oxygen in water compared to larger bubble systems.

They are used in sewage plants, industrial effluent plants, fish farming, and other water treatment setups.

The bubble size typically ranges from 0.8 mm to 1.9 mm, depending on design and operating conditions.

EPDM membranes are durable, chemical-resistant, and long-lasting, making them suitable for continuous aeration applications.

Most suppliers offer 9-inch and 12-inch discs.

The standard airflow range is 0–20 m³/hr, which ensures efficient aeration without overloading the diffuser.

They can typically handle up to 1.5 kg/cm² operating pressure.

With proper maintenance, an EPDM fine bubble disc diffuser can last between 5 to 8 years depending on water quality and usage.

Smaller bubbles create more oxygen transfer per unit of air supplied, reducing blower energy consumption by up to 30–40%.

Yes, they can clog if the water has high suspended solids, but regular cleaning and preventive maintenance minimize the risk.

They are widely used in textile, food processing, pharmaceuticals, chemicals, paper, and aquaculture industries.

  • EPDM membranes: Affordable, durable, chemical-resistant
  • Silicone membranes: More flexible, high-temperature resistant, long-lasting

Yes, they maintain dissolved oxygen levels in fish and shrimp farms, ensuring better survival and growth rates.

Consider tank size, airflow requirement, water quality, and membrane material (EPDM/Silicone) before selecting the diffuser.

Price depends on size (9” or 12”), membrane material, airflow capacity, brand reputation, and order quantity.

It is a general term for disc-shaped diffusers used in aeration tanks to release air bubbles for oxygen transfer.

A membrane disc diffuser uses a flexible membrane (EPDM/Silicone) instead of ceramic or rigid plates, ensuring better flexibility and easy maintenance.

Vasupharmatech offers high-quality EPDM and silicone diffusers, with superior oxygen transfer efficiency, energy savings, and durability, making them ideal for STPs, ETPs, and industrial use.

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Coarse bubble diffuser: Submerged aeration for microbial degradation.
Fine bubble disc diffuser: Submerged aeration for microbial degradation.
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Coarse bubble diffuser: Submerged aeration for microbial degradation.
Fine bubble diffuser: Submerged aeration for microbial degradation.
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testimonials

What Our Clients Say About Us


Water Resource

Verified Purchase

Vasu Pharmatech is truly one of the best companies in the industry.The quality of Diffuser, Tube Pac Media , Bio Pac Media & Filter Press is excellent. I am extremely satisfied with the product.The team is very supportive, professional, and always ready to help.If you are looking for top-quality Water & waste water product, reliable service, and a trustworthy company, Vasu Pharmatech is the perfect choice.
Highly recommended!


Er. Vikas Shukla

Verified Purchase

Excellent experience with Vasu Pharmatech. We sourced water treatment components (diffusers and tube deck media) from them, and the quality has been top-notch. The materials are durable and have improved the efficiency of our plant. Highly recommended for anyone looking for reliable STP/ETP equipment in India.


ABHISHEK SAINI

Verified Purchase

Vasu Pharmatech is a reliable and well-established company in the water and wastewater treatment industry. The quality of their products Air diffusers, Filter press, MBBR media, Tube Pac media and Tube settler media is consistently excellent and meets expected industry standards. The team is professional, cooperative, and responsive throughout the process. Orders are delivered on time as committed, and coordination is smooth.


Ajay Sharma

Verified Purchase

Very good company and Staff is so nice & humble. Especially that one says “Good Morning Sir. How are You.” I have received my orders quickly and timely as committed with supplier. Diffuser & Membrane quality is up to the mark and Lalit Ji is too helpful.


Sachin Rana

Verified Purchase
Best product and service, timely response for all process.. nice experience with Vasu Pharmatech
 
                                                                                                                                                                  


VISHAL SHUKLA

Verified Purchase

Vasu Pharmatech is a best company in the manufacturing of Air Diffusers, Filter Press, MBBR Media and Tube Settler Media                                                                                                                                                                                                                                                                                                         


VISHAL SHUKLA

Verified Purchase

Always received the supply of MBBR , Tubedeck media etc in right time right quantity and right place , totally satisfied with services and employees coordination is so 😊🙏🙏


ajay kumar

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Very nice service, excellent staff, Good comunication, timely response for all process..nice experience of dealing with them                                                                                                                                              


AN Engineers & Chemicals

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All product are very good and after sales service support is very nice      

 

 


Pradip Rajput

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Quality product and prompt service support 👍🏻


Venkat V

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I bought air diffuser that’s good to use


Banerjee Uzzal

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Quality product, timely response, deliverd Timely


Gini Sutradhar

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Product quality is very best.


An Engineers & Chemicals

Verified Purchase

Good in Product Quality & Services


vikas sharma

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Excellent services Vasu Pharmatech


garg kumar

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The diffusers are performing very well


Kelly Bryant

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Great products and service


Vikas Shukla

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Excellent product quality


Ankit Kumar

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Very good company


nikhil kumar

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Best service and materials


Palak Thakur

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Good quality 👍


Renji Chacko

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Good


renji3265 chacko

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Good

Farhan Sheikh

Jaipur

Verified Purchase

Coarse Bubble Diffuser ka aeration kaafi fast hai, kaam asaan ho gaya.

Ravi Bansal

Delhi

Verified Purchase

Tube Settler Media ka installation unke team ne jaldi complete kar diya.

Prakash Menon

Tamil Nadu

Verified Purchase

Vasu Pharmatech ka Automatic Filter Press Machine time aur labor dono save karta hai.

Kavita Nair

Kerala

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FAB Reactor media ka biofilm growth uniform hai, kaafi achha experience.

Rajiv Kumar

Gujarat

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Maine unka Filter Press for Sludge Dewatering liya, full value for money hai.

Tina Arora

Delhi

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Inke Diffusers in STP reliable hai, paani ka treatment hassle free ho jata hai.

Neha Sharma

Hyderabad

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MBBR Bio Media ka price market competitive hai aur quality high.

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Reviews and Ratings

We certify that M/s. Vasu Pharmatech, located at 66B, Pocket AD Shalimar Bagh, Delhi-110088, supplied us with a Pharmatech filter press for our 275 KLD ETP plant at M/s. Asian Colour Coated Ispat Ltd. in Bawal, Dist: Rewari (Hr.). The plant was started in January 2018 and is still working well. The product and its performance have been satisfactory up to now.

ASIAN COLOUR COATED ISPAT LIMITED
Rewari, Haryana

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