Engineered to surpass expectations, the AAA PROFESSIONAL triplex pump rated up to 3400 PSI @ 2.5 GPM is highly efficient. It minimizes engine load while delivering top performance. AAA pumps carry a 5 year limited commercial warranty. The 90037 contains dual oversized ball bearings for better wear, friction resistance and longer lasting performance in the toughest cleaning environment. Equipped with the Easy-Start feature, the 90037 is rated up to 3400 PSI @ 2.5 GPM.