UL 2227:2019 PDF Download

The UL 2227:2019 Standard for Overfilling Prevention Devices specifies requirements for devices used on stationary or portable LP-Gas containers. These devices consist of a shutoff mechanism that works in conjunction with a liquid level sensing device. When the liquid level in the container reaches a predetermined point, the sensing mechanism triggers the shutoff mechanism to stop the incoming flow of LP-Gas during refilling operations. The sensing mechanism can be in the form of a float, dip tube, or other type of sensor.

These overfilling prevention devices can be standalone components that are installed on cylinder or fill valves designed for this purpose, or they can be integrated into the design of a cylinder or fill valve assembly. These devices are suitable for use in various applications, including automotive applications.

The standard specifies that these overfilling prevention devices must comply with the requirements of other relevant standards, such as the Liquefied Petroleum Gas Code (NFPA No. 58), the standard for Outdoor Cooking Gas Appliances (ANSI Z21.58/CGA 1.6-M95), and the standard for Recreational Vehicles (RVIA A119.2).

In summary, UL 2227:2019 Standard for Overfilling Prevention Devices establishes the requirements for devices that prevent overfilling of LP-Gas containers. These devices ensure safe refilling operations by shutting off the incoming flow of LP-Gas when the liquid level reaches a specified point. They can be standalone components or integrated into cylinder or fill valve assemblies and are designed for use in various applications, including automotive applications. Compliance with other relevant standards is also required.