According to the standards, line pressure regulators must be listed in accordance with which specification?

Line pressure regulators are essential components in LP gas systems, providing the necessary control over the gas pressure for safe and efficient operation. The correct specification for line pressure regulators is ANSI Z71.80/CSA 6.22. This standard outlines the performance, construction, and testing requirements for regulators, ensuring they meet safety and operational criteria that protect both users and equipment.

The ANSI Z71.80/CSA 6.22 specification establishes specific protocols and requirements that manufacturers must adhere to, thus assuring that the regulators are both reliable and safe for consumer use. Compliance with these standards is crucial because it helps to mitigate risks associated with gas leaks, pressure failures, and other hazards that could potentially arise from the operation of LP gas systems. The existence of such standards maximizes safety and efficiency in gas distribution.

Other options mentioned do not pertain to line pressure regulators and instead relate to different types of equipment or standards, which may lead to confusion regarding their application in LP gas systems. Therefore, understanding the correct specification provides clarity on the proper regulations governing the safety and performance of line pressure regulators.