Plastic diaphragm pumps have evolved significantly over the past decade.
From simple transfer units to advanced, modular fluid-handling systems, today’s pumps deliver
better chemical resistance, higher efficiency, and lower maintenance.
Tapflo’s plastic diaphragm pump design combines proven air-operated technology with smart
material engineering to meet the complex needs of Indian process industries.
Key Takeaways
● Modular construction allows fast maintenance and part interchangeability.
● Improved air systems increase energy efficiency and reliability.
● Conductive designs ensure ATEX and chemical safety compliance.
How Plastic Diaphragm Pumps Work
air to move two diaphragms alternately.
The pumping action draws liquid in and out through check valves.
This simple, seal-less mechanism avoids leakage and allows safe handling of corrosive and viscous
fluids.
“Today’s plastic diaphragm pumps are smarter, lighter, and more durable helping engineers reduce
downtime and improve plant safety.”
Tapflo Aftermarket and Service
Innovation 1: Solid-Block Construction
Earlier plastic pumps were made by moulding or welding parts, which could crack or leak under
stress.
Tapflo introduced solid-block machining, where the entire pump body is carved from a single block
of PE (polyethylene) or PTFE (polytetrafluoroethylene).
Benefits:
● No weld lines or joints to corrode
● Longer service life
● Higher pressure and temperature tolerance
This approach ensures full chemical resistance and superior mechanical strength—ideal for Indian
plants handling acids, alkalis, and abrasive slurries.
Innovation 2: Modular Design for Maintenance
Traditional pump repair meant complete disassembly. Tapflo’s modular plastic pump design changes
that.
Manifolds, diaphragms, and valve seats can now be replaced individually.
Benefits:
● Shorter maintenance time
● Fewer spare kits required
● Reduced downtime and labour cost
Plants running multiple Tapflo pumps can maintain several models using the same spare
components, simplifying inventory.
Innovation 3: Conductive and ATEX-Certified Materials
Modern process plants demand safety in explosive or solvent-rich zones.
Tapflo developed conductive PE and PTFE materials that safely dissipate static electricity, preventing
spark risks.
Benefits:
● Certified for ATEX Zone 1 and Zone 2
● Safe for flammable or volatile liquids
● Prevents static build-up and discharge
Innovation 4: Energy-Efficient Air Systems
Tapflo’s new generation air valve design ensures smoother operation and reduced air consumption.
It prevents stalling and offers more stable flow at lower air pressures.
Benefits:
● Reduced air consumption
● Lower operating noise
● Increased diaphragm life
This innovation helps Indian plants save energy and maintain consistent performance across varying
air quality conditions.
Innovation 5: Hybrid Pump Configurations
For mixed-duty plants that handle both abrasive and corrosive fluids, Tapflo offers hybrid plastic
pumps for example, PE body with PTFE diaphragms.
Benefits:
● Combines abrasion resistance and chemical compatibility
● Suitable for changing process conditions
● Longer life than single material units
Hybrid designs provide a practical solution for multi-product facilities such as speciality chemical or
surface treatment plants.
Innovation 6: Optimised Flow Paths
Latest Tapflo pump chambers are re-engineered to reduce dead zones and turbulence.
This design improves flow uniformity and makes cleaning easier important for hygienic and chemical
applications.
Benefits:
● Reduced product residue
● Shorter cleaning time
● Improved volumetric efficiency
Innovation 7: Digital Monitoring Options
Optional smart air control systems allow operators to monitor cycle rate, air pressure, and
diaphragm wear.
Such monitoring helps detect maintenance needs early and prevent sudden failures.
Benefits:
● Predictive maintenance capability
● Improved process control
● Enhanced operator safety
Typical Technical Features
|
Parameter |
Typical Range
|
Notes
|
|
Flow rate
|
up to {data needed} L/min
|
varies by model
|
|
Max air pressure
|
8 bar
|
standard AODD pressure
|
|
Suction lift
|
5 m dry, 8 m wet
|
self-priming
|
|
Temperature limit
|
up to {data needed} °C
|
depends on material
|
|
Chemical compatibility
|
pH 0–14
|
universal range
|
Applications in India
● Chemical manufacturing – acid, alkali, and solvent handling
● Water and wastewater – sludge and neutralisation transfer
● Pharmaceuticals – cleaning and buffer solutions
● Paints and coatings – pigments and thinners
● Surface treatment – pickling and plating baths
Advantages of the Latest Tapflo Plastic Pump Designs
● Leak-free and corrosion-proof operation
● Fast maintenance with modular parts
● Air-driven safety in ATEX and wet areas
● Long service life and low energy use
● Simple to clean and flush
Frequently Asked Questions
1. Are these pumps suitable for flammable fluids?
Yes, conductive versions meet ATEX standards for explosive environments.
2. Can I retrofit old pumps with modular parts?
Many Tapflo models allow part interchangeability with earlier designs.
3. How does the new air valve improve performance?
It reduces stalling and ensures stable flow with lower air consumption.
4. What is the lifespan of new diaphragms?
Typically 12–18 months, depending on chemical and duty cycle.
5. Can these pumps handle mixed chemical and abrasive media?
Yes, hybrid models such as PE with PTFE diaphragms are ideal.
Next Steps
Modernise your process line with the latest Tapflo plastic diaphragm pump designs.
Our engineers can assess your application and recommend the ideal configuration for safety,
efficiency, and long-term value.
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Aftermarket & Service for technical support, maintenance kits, and upgrades.
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