A system for metal surface restoration that includes: a liquid solution, where the liquid solution includes a mixture of water, resin, polymer, liquid wax, plasticizer, mildew remover and a sealer; a container, where the container holds the liquid solution during use; and a hand spray attached to the container, where the hand spray enables the application of the liquid solution onto a metal surface. The system preferably includes a hose, where hose connects the hand spray to the container. The hand spray may also include a nozzle and a trigger, where a user depresses the trigger to emit the liquid solution out of the nozzle.

A tank holding a quantity of liquid releasably connects to a portable pump assembly through a connector to provide a portable sprayer. The tank connects to a feed line that supplies spray nozzle with the liquid. The connector combines a quick disconnect connector with a pressure relief valve. The portable pump assembly includes an electric pump, a switch assembly, and a check valve. The portable pump assembly directs gas through the check valve into the connector to increase the gas pressure in the tank and force the liquid in the tank to flow through the feed line and out the spray nozzle. The switch assembly turns off the electric pump when the gas pressure in the tank exceeds a predetermined limit while maintaining the flow of liquid through the spray nozzle.

A pressurised sprayer, including a tank, the tank including a main body, a head region and a plunger for manually pressurising the tank. The pressurised sprayer also includes a compressed air inlet for automatically pressurising the tank with air from outside, a pressure relief valve, a compressed flow outlet, and a removable, external compressor module that is independent of the tank, the compressor module for its part including an air compressor and a battery for supplying the air compressor with electricity, the compressor module being connected to the compressed air inlet, the compressor module being secured to the sprayer. The pressurised sprayer where the compressed air inlet includes a valve stem, the valve stem for its part being a non-return valve, and the compressor module being connected to the valve stem via a hose having a connection head.

A pressurizable fluid container apparatus, system and method of use.