Test points allow for measuring pressure at different points of the gas train and identifying where pressure drops or instability occur.

Before the filter

Shows the actual pressure arriving from the upstream network.

After the filter

Comparison with the previous measurement indicates the filter's differential pressure.

After the regulator

Confirms downstream pressure and the regulator's behavior under different loads.

Between V1 and V2

The intermediate point is used in many configurations for valve proving or checking pressure between the valves.

Safety

Measurement should only be performed by a qualified technician using appropriate equipment and in accordance with established procedures.