Is the regulator vent located on the inlet side or outlet side of the regulator?

The regulator vent is indeed located on the outlet side of the regulator. The purpose of the vent is to allow any gas that may escape during operation to exit safely, preventing the buildup of pressure within the regulator itself. By positioning the vent on the outlet side, any excess pressure or gas can be quickly released from the system to maintain safe operating conditions.

Positioning the vent in this manner helps to ensure that the regulator can function properly and efficiently, keeping the downstream equipment supplied with a steady and controlled flow of gas. If the vent were located on the inlet side or in any other place, it could pose safety risks and hinder the regulator's performance. Thus, the design prioritizes both safety and functionality by placing the vent on the outlet side.