Quantum Customer Service
At Quantum, we deliver customer support you can count on. By partnering with certified service networks, we offer a wide range of services that help you run your fleet more efficiently—reducing costs, extending fuel range, and maximizing uptime. Whether you’re across town or across the country, we can coordinate service anywhere in the U.S., typically within 24 hours.
We’re committed to providing sustainable, high-performance systems for the storage and transportation of fuel.
Quantum Headquarters
25372 Commercentre Drive
Lake Forest, CA 92630
Main line: (949) 930-3400
Sales: QTsales@qtww.com
Warranty: QTwarranty@qtww.com
Service: QTservice@qtww.com
Parts: QTparts@qtww.com
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Warranty Information
With advanced technology, proven expertise, and dependable service, we offer a warranty program our customers can count on. We stand behind every product we make with a 2-year/200,000-mile warranty for fuel module systems and 2-year/100,000-mile warranty for tanks.
Product Documentation
At Quantum, we know that great documentation makes for a great product experience. We provide clear descriptions, intuitive manuals, and streamlined parts catalogs—as well as online, phone, and email assistance.
Frequently Asked Questions
If repairs are necessary, we will help find a service provider near you. Contact us online or call us at 1-800-816-8691 and our technical team will be happy to assist you.
You can search for alternative fuel stations at the United States Department of Energy website: http://www.afdc.energy.gov/locator/stations/
- Compressed Natural Gas (CNG): The CNG cylinder is designed for use only with dry CNG that meets SAE J1616 fuel quality. Do not use liquid natural gas, hydrogen, butane, LPG, or other gaseous fuels as a fuel source.
- Hydrogen: To ensure proper vehicle operation, it is recommended the cylinder be filled with hydrogen that meets the following specifications:
- Industrial grade, 99.95% (i.e., Three Nine) pure hydrogen that has been verified or certified by the supplier
- Less than 5 ppm carbon monoxide
- No sulfur, phosphates, organic compounds, or trace metals
If you believe there is a leak in the fuel system after an accident:
- Verify there are no ignition sources in the area.
- If it is safe, close the vehicle’s ¼ turn manual-shut-off valve.
- If it is safe, close the cylinder manual-shut-off valve.
- Evacuate the immediate area.
The addition of a cylinder(s) may reduce the load carrying capacity of your vehicle and may affect the handling dynamics of your vehicle.
Refer to your vehicle owner’s information and any additional information provided by the fuel system installer for any guidance or precautions.
The fuel is heated during the filling process, causing the fuel pressure to increase. As the fuel in the cylinder cools, the pressure will decrease, a process called “settling.”
The Quantum Type 4 cylinder has been rigorously tested for impact, fire, and even gunshot resistance. In many ways, your Type 4 cylinder is safer than a gasoline tank in a conventional vehicle.
All Type 4 cylinders are permeable, which means there is an extremely small amount of fuel that escapes through the shell of the cylinder. Occasionally enough of this fuel will accumulate in a trapped area that it can be detected by smell.
Fuel leaks can be observed in a number of ways:
- Visual
If a leak exists in the high-pressure side of the system, there may be oil residue or ice present at the point of the leak. - Audible
Depending on the size of the leak, you may hear sounds ranging from a slight hissing to rushing air. - Smell
Compressed natural gas (CNG) has a distinctive odor, one that you may recognize from your natural gas stove at home. The fuel in your CNG cylinder is the same fuel that your natural gas stove burns.
For hydrogen cylinders, the fuel is not odorized, and you will not be able to detect a fuel leak by smell. Consult the vehicle’s manual for more details.
In general, it’s safe to assume that anything you use to wash your vehicle’s painted surface will be safe for the cylinder, if used in the same concentrations. The exterior of the cylinder can be cleaned using just water or water and a mild detergent, such as Simple Green®. If a detergent is used, make sure to thoroughly rinse the cylinder with clean water.
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