Under the New Generation Fuels Act of 2021, proposed by the U.S. Senate and sponsored by more than 20 members of the U.S. House of Representatives, the E15 mixture would be increased to E20 and the E25 mixture would be increased to E30. High-concentration ethanol gasoline helps increase the country's gasoline supply and reduce its dependence on oil.

Since 2007, UL Solutions has been providing professional testing, inspection and certification services for fuel tankers and their components for ethanol gasoline with nominal ethanol concentrations greater than 10%, such as E25 and E85. Currently, E25 certification covers E20 blends, all ethanol standards have been revised, and E40 is used as a test fluid to evaluate E30 products.

Certification of refueling machines and their components

UL Solutions uses many years of certification experience to certify refueling machines and their components for filling with ethanol concentrations greater than 10%, in a variety of product categories. We can test, inspect and certify the following products:

Electric Fuel tankers (EWTV) - When the ethanol concentration is 10% or less (e.g. E10), it is subject to UL 87 Safety Standard for Electric Fuel tankers for Petroleum Products. In addition, we test, inspect and certify electric refueling machines for ethanol gasoline with nominal ethanol concentrations greater than 10% according to UL 87A, Standard for Electric refueling machines for gasoline and ethanol gasoline with nominal ethanol concentrations up to 85% (e.g., E0-E85).

Emergency Break Valves (ERBY) and Swivel Connectors (ERLV) - Compliant with UL 567, Safety Standard for Emergency Break Valves, Swivel Connectors, and Pipe Fittings for Petroleum Products and LP-Gas, and UL 567A, Nominal ethanol concentrations up to 85% (e.g. E0-E85) Standard for emergency break valves, swivel connectors and piping fittings for gasoline and gasoline/ethanol mixtures.

Refueling Guns (ETAZ) - Compliant with UL 2586, Safety Standard for Hose refueling Guns, and UL 2586A, Standard for Hose refueling guns for gasoline and gasoline/ethanol mixtures with nominal ethanol concentrations up to 85% (e.g. E0-E85).

Emergency shut-off Valve (EUCV) - Compliant with UL 842 Safety Standard for Flammable Liquid Valves and UL 842A Standard for gasoline and gasoline/ethanol mixture valves with nominal ethanol concentrations up to 85% (e.g. E0-E85).

Flammable Liquid Filters (VXYV) - Compliant with UL 331 Safety Standard for Flammable Liquids and anhydrous ammonia Filters, and UL 331A Standard for gasoline and gasoline/ethanol mixture filters with nominal ethanol concentrations up to 85% (e.g., E0-E85).

Flammable Liquids and Diesel Exhaust Liquid Hose Assemblies (MVQJ) - Compliant with UL 330, Hoses and hose Assemblies for Filling Flammable Liquids, and UL 330A, Hoses and hose Assemblies for filling gasoline and gasoline/ethanol mixtures with nominal ethanol concentrations up to 85% (e.g. E0-E85).

Visit UL Product iQ for more information about product categories and products certified in those categories. Download our Fuel Compatibility tool for more information on meeting the fuel compatibility requirements of EPA, state or other regulatory agencies.

Identify UL certified refueling machines and their components

UL certified flammable liquid filling units are marked with the UL Certified mark or enhanced mark, which includes the UL mark, the words "Certified" and "safe," geographic identifiers, product names (e.g. "Refueling machine accessories", "refueling gun", etc.) and the document number, or UL listing mark, including the words "UL" and "Listing" in the circular symbol, the control number, and the product name. For a detailed description of these marks, see the guide information for individual product categories.

The standard requires that the specific concentration of ethanol in the filling device should be greater than 10%(e.g. E10) and include additional labeling. Ethanol-gasoline refueling machines with nominal ethanol concentrations of up to 25% are also required to carry the warning "For use with E25 grade suspension hardware only." Ethanol gasoline refueling machines with nominal ethanol concentrations of more than 25% and less than 85% should be labeled "Used only in the following products", followed by the brand name and the specific model and name of the allowable hose assembly, emergency pull off valve, swivel connector and fuel gun combination. When performing the intended assembly or replacement of the suspension hardware, this text must be placed where it can be seen by the responsible person. As part of its certification, the components identified have the same concentration of ethanol as the fuel dispenser. Products must also include a logo indicating that they need to be used in conjunction with suspension hardware with the same ethanol concentration. The tanker assembly must also be labeled with the fuel grade it is intended to use, such as gasoline, "E25", "E40" or "E85" (if applicable).

Precautions for fueling system installation

To ensure that gasoline/methanol fuel filling systems are installed in compliance with applicable codes and safety standards, it is recommended that:

Determine the fuel mix to be filled.

Verify that the installation complies with applicable specifications.

Use UL certified (listed) fuel tankers and their components, which are labeled as suitable for use with the fuel to be filled.

Verify that the components to be installed on the tanker are labeled on the tanker's logo.

Inspect and maintain equipment according to fire code.

UL Solutions can assist customers in understanding complex regulatory requirements regarding fuel filling systems and other flammable and combustible liquid equipment. We published our first natural gas and oil safety standard in 1922, so we have extensive experience in interpreting and dealing with natural gas and oil safety issues. We use our extensive industry experience and expertise to help manufacturers, users and inspection organizations confirm that they meet the needs of a wide range of gas and oil equipment.