Super Max 8780 ASTPrice excludes freight. The Super Max 8780 AST is an ultra powerful, portable, electric cold water pressure washer featuring Daimer's exclusive AST (Automatic Shutoff Technology). AST extends the life of the 8780 AST by reducing the wear and tear on the pump and other components. Driven by a highly powerful 15 HP NEMA engine, this rugged cold water pressure washer offers extreme pressure of 4000 psi with a lower flow rate of 4 GPM. These powerful