The present disclosure relates to the technical field of liquid sprayers, and more particularly to a multifunctional spray gun. The spray gun comprises a handle designed for single-hand four-finger ergonomic gripping and a pressing plate configured for single-hand thumb depression. The handle and the pressing plate are hingedly connected to enable more labor-saving and convenient single-handed operation. Additionally, a spray nozzle is detachably connected to the spray gun's discharge end to atomize liquid for spraying applications. Simultaneously, a foam spray head is detachably connected to the spray nozzle, converting atomized liquid from the spray nozzle into foam to achieve foam discharge requirements. When foam functionality is unnecessary, the foam spray head can be removed. Further, when atomization is unnecessary, the spray nozzle can be detached to discharge liquid only. The above design satisfies diverse liquid-discharging requirements across different scenarios, providing multifunctionality and convenient operation.

An exemplary foam-at-a-distance dispenser includes a container for holding a fluid, a housing, a dispensing outlet, a motor and a pump. The pump has two or more air pump diaphragms, a liquid pump diaphragm, a liquid inlet, an inner valve plate, two or more air inlet valves secured to the inner valve plate, a liquid inlet valve secured to the inner valve plate, an outer valve support located outside of the inner valve plate, a liquid outlet valve secured to the outer valve support, an air outlet and a liquid outlet. Also included are motor, a wobble plate, a mixing chamber and a foaming cartridge located between the mixing chamber and the dispensing outlet. A liquid dispensing conduit extends from the liquid outlet to the mixing chamber and an air dispensing conduit extending from the air outlet to the mixing chamber.