Welcome to PureFlow® Technologies and AirDog®
The first true Fuel Air Separation System
for diesel engines, in the world!
Air/Vapor in Diesel Fuel
Retards Injection Timing!
AIR BECOMES ENTRAINED in diesel fuel from sloshing and agitation. Vapor develops from pump cavitation.
Air & Vapor are compressible. When air bubbles and/or vapor are present in the fuel, the injection is delayed until the air/vapor is compressed to the injection pressure. The delayed injection results in Retarded Injection Timing, Resulting In...Increased Fuel Consumption, Lower Power Output and Increased Exhaust Emissions!
AirDog® Industrial Systems feature Positive Fuel Air Separation technology, New 4G-HD Fuel Pump, a Microprocessor Fuel Filter Monitor, Demand Flow, and Adjustable Regulator!
The AirDog® Removes the Entrained Air from the fuel flow to the engine and maintains a Net Positive Pressure Head to the transfer pump preventing cavitation and vapor, Restoring Correct Injection Timing to your engine. Correct Injection Timing allows your engine to perform at maximum efficiency, as it was designed... FOR Increased Fuel Economy, Increased Power Output and Reduced Exhaust Emissions!
PureFlow® Technologies also manufactures 12 and 24 volt fuel pumps!
The NEW AirDog® 4G-HD Industrial Fuel Pump!
Featuring 4G design with Dual Port Flow and Quick Change Motor! 12 & 24 Volt DC electric powered pumps for general use!
AirDog®, Fuel Preporator® and Raptor® are registered trademarks owned by CD Patents, LLC. All Patents, United States & Worldwide, embodied in AirDog® Fuel Preporator®, and Raptor® products are also owned by CD Patents, LLC.
PureFlow® Technologies, Inc. Manufactures, Advertises, and Sells AirDog®, Fuel Preporator® and Raptor® Products under Authority of Patent Licensee Agreements with CD Patents, LLC.
PureFlow AirDog®, Shelbyville, IN, Manufactures, Advertises and Sells AirDog® Fuel Air Separation Systems and Raptor® Fuel Pumps for Pick-up Trucks by way of Manufacturing and Sales Agreements with PureFlow® Technologies, Inc. & Intellectual Property License Agreements with CD Patents, LLC.
PROTECTED UNDER THE FOLLOWING PATENTS
CANADA UNITED STATES OF AMERICA MEXICO
2,108,391 5,355,860; 5,746,184; 6,729,310 270409
NEW ZEALAND ITALY AUSTRALIA CHINA ECUADOR
532356 1362177 2008212010 1061420 PL 10-2021
Additional Foreign Patents Issued and Pending in Europe, South America, and Japan!
PureFlow® Technologies’ website may contain links to other websites. PureFlow®Technologies is not responsible for the privacy practices, copyright, or content of such websites.
Copyright© 2012 PureFlow® Technologies’, Inc... All Rights Reserved
PureFlow® Technologies, Inc.
1412 Creek Trail Drive
Jefferson City, MO 65109
Toll Free:1.877.GO DIESEL
Hours of Operation
8:00 AM-4:30 PM
Saturday & Sunday
How Does Air Become Entrained In Diesel Fuel?
As in all liquids, air becomes entrained in diesel fuel from sloshing and agitation! Air can be on the surface of the fuel in the form of foam or it can be in the bulk fluid in the form of tiny bubbles. Entrained Air is an issue of an "in use" engine in operating equipment!
What is Pump Cavitation?
Pump cavitation, simply put, is the pump not having enough pressure flow, or "Net Positive Pressure Head" of fuel coming into the inlet to completely fill the vacuum chamber of the pump.
Diesel fuel, as is true with all petroleum base liquids, will give off vapor when subjected to a vacuum. The amount of vapor depends upon the level of vacuum.
How Does Fuel Filter "Restriction" Effect Cavitation?
In the diesel engine industry, "fuel filter restriction" is a term that refers to the vacuum level at the inlet to the transfer or lift pump. It is measured in inches of mercury (in hg).
As the filter plugs with use, it further restricts the flow and increases the vacuum level in the pump.
The amount of vapor produced depends upon the level of vacuum.
What Else Increases Cavitation and Vapor?
As the fuel levels in the tank(s) goes down as the fuel is burned, the "Dry Suction Lift" increases. This reduces the flow, increasing the vacuum.
Operating at higher altitudes, where atmos-pheric pressure is less, reduces the fuel flow and increases vacuum. For example, at Denver, atmospheric pressure is about 17% less than at sea level and at Eisenhower Tunnel, it is approximately 32% less. Having less pressure to drive the fuel from the tank to the transfer pump, reduces the flow and increases the vacuum levels.
Higher fuel temper-atures cause more vapor to form than cooler fuel under the same vacuum!