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Yamada Pumps for Diesel Exhaust Fluid (DEF) Transfer Fill Dispense

Yamada Air-Powered Double Diaphragm (AODD) Pumps are an ideal solution for handling and managing the transfer of Diesel Exhaust Fluid (DEF) due to their reliable, non-electric, and contamination-free operation. Designed with chemical-resistant materials such as polypropylene, stainless steel, or PTFE elastomers, these pumps ensure compatibility with DEF, preventing crystallization and degradation. Their air-operated mechanism allows precise flow control, self-priming capabilities, and the ability to run dry without damage, making them well-suited for DEF dispensing and bulk transfer applications. Additionally, Yamada AODD pumps are built with leak-free construction and minimal moving parts, reducing maintenance while maintaining the purity and integrity of the DEF, ensuring compliance with ISO 22241 standards for diesel engine emissions control.

Benefits of Yamada DEF Pumps:

  • Intrinsically safe operation
  • Pump will not burn out on dry run or deadhead applications
  • Excellent for shear sensitive fluids
  • Flow rates from 1 to 215 GPM
  • Solids handling capabilities
  • Small footprint & portability
  • Ability to run on natural gas or compressed air
  • CSA Certified & UL Listed models available
  • 2:1 High Pressure Pumps

DEF Pump Applications:

  • Sumps (on- or off-shore)
  • Filtration
  • Drum unloading – Chemicals, diesel, hydrocarbons & anti-freeze
  • Potable water transfer
  • Batching
  • Compressors – oil & anti-freeze
  • Re-circulation of coolant
  • Crankcase oil transfer
  • Hot Glycol Transfer
  • Drilling mud & cleaning
  • Crude oil transfer
  • Heat treaters – flushing the system
  • Filter Press, Utility
  • Tanker/Railcar Unloading
  • Bulk Transfer
  • Day Tank Transfer
  • Settling Pond Transfer
  • Service Rigs

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Challenges of Pumping Diesel Exhaust Fluid (DEF) : Yamada Pumps make it safe and efficient.

  • Corrosion and Material Compatibility

    DEF is highly corrosive to certain metals, including aluminum, copper, and brass. Only stainless steel or DEF-approved plastics (like polyethylene and polypropylene) should be used for pumps, fittings, and hoses.

  • Use DEF-Compatible Equipment

    Choose ISO 22241-compliant pumps, hoses, and fittings. Electric Yamada diaphragm pumps, rotary hand pumps, and peristaltic pumps are common DEF solutions.

  • Contamination Risks

    Even small contaminants (dirt, dust, oils, or metals) can degrade DEF quality and cause Selective Catalytic Reduction (SCR) system failure in diesel engines. Using a closed-loop dispensing system and dedicated DEF equipment is essential.

  • Freezing and Temperature Sensitivity

    DEF freezes at 12°F (-11°C), which can obstruct pumps and hoses. Systems must include heated hoses, insulated tanks, or recirculating pumps in cold climates.

  • Crystallization and Clogging

    If DEF is exposed to air and water evaporates, urea crystals can form and clog pumps and nozzles. Regular flushing with distilled water prevents buildup.

  • Pumping Pressure and Flow Rate

    DEF requires low-pressure, high-volume pumps to avoid aeration and excessive foaming. Yamada diaphragm pumps, peristaltic pumps, or electric Yamada diaphragm pumps are recommended.

  • Avoiding Air Contamination

    DEF absorbs moisture from the air, leading to dilution and reduced effectiveness.

    Use sealed storage and dispensing systems to maintain purity.

Using a Yamada diaphragm pump to pump antifreeze offers several advantages, including:

  • Compatibility with DEF

    Yamada diaphragm pumps are made with materials that are compatible with DEF, preventing contamination and degradation of the fluid.

  • Non-Metallic Construction Options

    Many Yamada pumps use non-metallic materials (such as polypropylene or PVDF), which help prevent corrosion when handling DEF.

  • Air-Operated Efficiency

    Since Yamada diaphragm pumps are air-operated, they eliminate the need for electrical components, reducing the risk of DEF crystallization due to heat exposure.

  • Self-Priming Capability

    These pumps can self-prime, allowing for easy startup and operation without the need for additional priming mechanisms.

  • Dry-Run Capability

    Unlike some other pump types, diaphragm pumps can run dry without damage, making them highly reliable in DEF transfer applications.

  • Precise Flow Control

    The ability to control air pressure allows for precise flow adjustments, which is beneficial for metering DEF in various applications.

  • Leak-Free Operation

    Yamada pumps use a diaphragm design that ensures leak-free operation, preventing fluid loss and environmental contamination.

  • Low Maintenance Requirements

    With fewer moving parts and no need for lubrication, Yamada diaphragm pumps require minimal maintenance, reducing downtime and operational costs.

  • Gentle Pumping Action

    The low-shear design prevents DEF degradation, preserving its purity and preventing urea crystallization.

  • Explosion-Proof & Safe Operation

    Since they are air-operated and do not generate sparks, they are safe to use in hazardous environments where DEF is being handled near other combustible materials.

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Yamada diaphragm pumps feature a Patented Non-Lubricated Air Valve with a Non-centering Stall-free Spring, offering several key advantages:

1. Non-Lubricated Design

  • Reduces Maintenance: Eliminates the need for continuous lubrication, lowering maintenance time and costs.
  • Prevents Contamination: No risk of oil contamination in air exhaust or the fluid being pumped, making it ideal for sensitive applications like food, pharmaceuticals, and chemicals.
  • Enhanced Reliability: Ensures consistent performance without requiring frequent service for lubrication.

2. Stall-Free Operation

  • Non-Centering Spring Mechanism: Prevents the pump from stalling by keeping the air valve in motion, even in low-pressure or fluctuating conditions.
  • Continuous Flow: Unlike traditional diaphragm pumps that may stall if pressures are unbalanced, the Yamada system ensures smooth and uninterrupted operation.
  • Better Performance in Low Air Pressure Applications: Operates efficiently even in environments where air pressure is inconsistent.

3. Improved Efficiency

  • Reduced Air Consumption: The efficient air valve system optimizes air usage, lowering operational costs.
  • Lower Energy Costs: The pump runs more effectively with less compressed air demand, making it more energy-efficient.

4. Durability & Longevity

  • Less Wear & Tear: Without the need for lubrication, there are fewer chances of gum buildup or air valve sticking, resulting in a longer lifespan.
  • Reliable in Harsh Conditions: Works well in extreme environments, including those with moisture-laden air or dirty operating conditions.

5. Ease of Maintenance

  • Simplified Air Valve Design: Makes servicing and repairing the pump faster and more straightforward.
  • No External Lubricators Required: Reduces the number of components that need maintenance or replacement.

This patented system makes Yamada diaphragm pumps highly reliable and cost-effective, particularly in industries where downtime and maintenance costs are critical concerns.