Abstract: A volatile liquid vapor vessel blanketing apparatus includes at least one volatile liquid storage tank with volatile vapors to be recovered, a pressure regulator that maintains a set blanketing pressure of natural gas on the storage tank and a regulator inhibitor. The apparatus further includes a check valve, a vapor recovery compressor and a conduit system. The conduit system connects the pressure regulator, regulator inhibitor, check valve and vapor recovery compressor to a storage tank vapor outlet of the at least one storage tank and a natural gas supply. The regulator inhibitor automatically inhibits operation of the pressure regulator when the vapor recovery compressor is pumping vapor from the storage tank.