AODD Pump (Air Operated Double Diaphragm Pump)

How Does an AODD Pump Work?

An AODD pump works by using compressed air to move two flexible diaphragms back and forth, creating suction and discharge action to transfer fluids safely and efficiently.

1. Compressed Air Enters the Pump
   Air is supplied to the pump through an air inlet and directed by an internal air valve.
2. Diaphragm Movement Begins
   The air pushes one diaphragm outward while simultaneously pulling the opposite diaphragm inward. This alternating motion drives the pumping action.
3. Fluid Suction
   As one diaphragm moves back, it creates a vacuum inside the chamber. This vacuum opens the inlet check valve and draws fluid into the pump.
4. Fluid Discharge
   When the diaphragm moves forward, it pushes the fluid out through the outlet check valve toward the discharge line.
5. Continuous Alternating Cycle
   The air valve automatically switches airflow between diaphragms, allowing continuous, smooth pumping without the need for electricity.

Types of AODD Pumps by Material of Construction

PTFE (Polytetrafluoroethylene) AODD Pumps

• Size: ½” to 3”
• Flow Rate: 20 LPM to 1000 LPM
• Best for aggressive chemicals, solvents, acids, and corrosive fluids

Polypropylene (PP) AODD Pumps

• Size: ½” to 3”
• Flow Rate: 20 LPM to 1000 LPM
• Ideal for acidic and alkaline chemical transfer

Aluminium AODD Pumps

• Size: ½” to 3”
• Flow Rate: 20 LPM to 1000 LPM
• Used for oils, fuels, inks, and general industrial fluids

Stainless Steel AODD Pumps

• Size: ½” to 3”
• Flow Rate: 20 LPM to 1000 LPM
• Suitable for food, pharmaceutical, solvent, and hygienic applications

Performance Chart of AODD Pump

Key Features & Benefits of AODD Pumps

• Air-operated (no electricity required)
• Explosion-proof and intrinsically safe
• Handles solids, slurries, and viscous fluids
• Can run dry and dead-head safely
• Self-priming with excellent suction lift
• Corrosion-resistant construction options
• Low maintenance and easy servicing

AODD Pump Applications

Technical Specifications of AODD Pump

• Pump Type: Air Operated Double Diaphragm
• Material: Polypropylene / PTFE / Aluminium / SS
• Size Range: ½” to 3”
• Maximum Flow Rate: Up to 1000 LPM
• Head: Up to 40 metres
• Capacity: Up to 47 m³/hr
• Solid Handling Size: Up to 25 mm
• Operating Temperature: Up to 150°C
• Drive Type: Air Driven
• Application: Slurry, filter press, acidic material transfer

Advantages of AODD Pumps Over Centrifugal Pumps

• Better handling of viscous and abrasive fluids
• Can run dry without seal damage
• No mechanical seals required
• Safer for hazardous environments
• Minimal shear, ideal for sensitive fluids

Why Choose Unique Pump Systems for AODD Pumps?

Unique Pump Systems is a trusted AODD pump manufacturer and supplier in India, offering:

• Robust industrial designs
• Custom material configurations
• Reliable performance in harsh conditions
• Fast delivery and technical support
• Proven installations across multiple industries