Super Max 8785Canadian Businesses: Only 5% Total Canadian Sales Tax (Save Up To 8%) For Most Provinces. The Super Max 8785 is a portable cold water pressure washer powered by a 15 HP NEMA engine. The Super Max 8785 offers the same options available as the Super Max 8755, with a lower flow rate (15. 1 LPM) but a higher pressure level (4000 psi, 275. 9 bar). This model is ideal for applications that require a portable machine with a higher pressure, but lower flow