The b&m A 4000 is a high-pressure unit with a working pressure of up to 230 bar. The appliance is optionally available in aluminum or stainless steel. VA is the material of choice for a long service life, especially when alkaline or aggressive media are used. Can be used on any construction site without additional compressed air thanks to the power supply connection. Depending on the accessories, all models can be used as high-pressure injection devices, as flood devices or for airless or aircombi spraying. An inlet valve with valve dabber simplifies commissioning, even if the valve cone should become stuck. The working pressure is steplessly adjustable from 0 – 230 bar on the pressure regulator of the appliance.