If no vent limiter is present, what must be done to a regulator?

In situations where no vent limiter is present, physically piping from the regulator to the exterior and capping the pipe with a screen is necessary to ensure safety and compliance with regulations. This action allows any potential gas that might escape from the regulator to vent safely outside, reducing the risk of harmful gas buildup in the interior space, which can lead to hazardous conditions such as explosions or asphyxiation.

By terminating the vent outside, it helps to mitigate the dangers associated with gas leaks in enclosed areas. The screen serves to prevent any debris or insects from entering the vent line, thereby ensuring unobstructed gas flow and maintaining the effectiveness of the regulatory system.

Options that suggest disconnecting the regulator or replacing it immediately do not address the immediate need for safe venting. Adding a vent limiter is not applicable since the question states none is present, making the physical piping solution the most practical and necessary step to take.