PureFlow AirDog is the industry leader in diesel fuel air separation technology and high-performance lift pumps. Engineered specifically for Powerstroke, Cummins, and Duramax platforms, AirDog systems remove entrained air, water, and contaminants from diesel fuel while delivering consistent fuel pressure to protect injectors, improve fuel economy, and maximize horsepower under heavy towing and street conditions.

Why Choose PureFlow AirDog?

  • PATENTED AIR & VAPOR SEPARATION

    AirDog removes entrained air, water, and debris from diesel fuel before reaching the engine, restoring lost spray patterns, horsepower, and fuel economy.

  • PROTECTS EXPENSIVE INJECTORS

    By supplying continuous, positive fuel pressure free of air and moisture, AirDog systems protect expensive high-pressure injection pumps and injectors from scoring and premature failure.

  • CONSISTENT DIESEL FUEL PRESSURE

    Raptor and AirDog lift pumps eliminate fuel starvation during heavy towing, hard acceleration, and high-horsepower tuning on Cummins, Duramax, and Powerstroke builds.

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PureFlow AirDog: Frequently Asked Questions (FAQ)

What is the main benefit of an AirDog Fuel Air Separation System?

Diesel fuel naturally contains entrained air and vapor, which gets compressed in the injection system and disrupts injector spray timing. AirDog separates air, water, and particulates down to 2 microns, delivering pure, pressurized fuel to the injectors for optimal combustion efficiency.

What is the difference between an AirDog System and a Raptor Lift Pump?

An AirDog system is a complete unit that combines a high-flow lift pump with integrated multi-stage filtration and patented air/vapor separation. A Raptor pump is a standalone high-flow electric lift pump designed solely to deliver higher fuel flow and adjustable pressure to your fuel system without built-in filters.

Why does my diesel truck need an aftermarket lift pump?

Many OEM diesel trucks rely on weak stock fuel pumps or depend entirely on the high-pressure injection pump to pull fuel from the tank under vacuum. An aftermarket lift pump maintains steady positive pressure to prevent fuel starvation, cavitation, and costly high-pressure pump failure.

How often should I change the filters on my AirDog system?

It is generally recommended to replace your AirDog fuel filter and drain/replace the water separator every 15,000 to 20,000 miles, or annually, depending on diesel fuel quality and driving conditions.

Are PureFlow AirDog systems compatible with bio-diesel blends?

Yes. AirDog lift pumps and filtration components are constructed with heavy-duty seals and anodized components compatible with standard ultra-low sulfur diesel as well as biodiesel blends.