Which component connects the gas main to the service line at a farm tap?

The component that connects the gas main to the service line at a farm tap is referred to as a pin-off tee. This fitting is designed to allow a connection from the main gas line to a smaller service line, which typically leads to the desired location, such as a farm or residence. The pin-off tee is crucial in gas distribution systems, as it facilitates the branching of the gas supply without compromising the integrity of the main line.

In this context, while components like regulators are essential for controlling pressure and gas meters for measuring consumption, they do not serve the specific purpose of connecting the main gas line to a service line. A pinch valve, on the other hand, is used for controlling flow in various applications but is not relevant to the specific connection function required in this scenario. Therefore, the pin-off tee is the correct choice due to its direct role in establishing the connection necessary for gas distribution in that context.