With regard to a fuel dispenser, the term anchor usually means to use bolts to attach a component to a rigid base so that it cannot move.

For example: Dispenser frames are anchored to a pump island or dispenser mounting box so that the dispenser will not tip over or move during normal operations. Emergency shutoff valves and vapor shear valves are anchored to the pump island so that they will function properly.

For more information, see PEI/RP500.