Testing tool for gas pressure regulator RMG 342 Adjustment tool with thread G 3/4 inch Test tool for the safety shut-off valve (SSV) of a gas pressure regulator (GDR), for example of the type RMG 342. The test requires a controlled pressure increase in the downstream pipeline system in order to test the upper response pressure or shut-off point of the SSV. Material: aluminium An adjustment spindle is additionally required.