The Hydro-Vac from Wachs Utility Products can be used for valve maintenance hydroexcavation. Operating water distribution valves is essential in emergency situations such as a water main break. Minimizing costly damage while reducing customer interruption by being able to access and open or close the valve is critical. The trailer- or truck-mount systems can help gain access to buried valves by breaking up sediment with the 3,000 psi pressure washer and then removing it through 7/8-, 1 1/4- or 2.5-inch suction wands using a 500 cfm positive displacement blower providing 11 inches Hg vacuum to a 250-gallon hydraulic slide-and-dump spoils tank. 866/392-1060; www.turnvalves.com.