Vacless Systems SVRS-10ADJ Automatic Adjustable Pump-Mounted SVRS - Features Auto Reset Upon Entrapment Release, Works With 1/2hp - 10hp Pumps Vacless Safety Vacuum Release Systems Poolsupply4less is now stocking the Vacless SVRS valves that adjust themselves to any existing pool piping configuration and filtration system. The Vacless unit is simply attached to the threaded port of a circulation pump's drain plug. Adjustable models allow suction relief for even the most unusual applications and are compliance tested up to 200 feet. The secret is an innovative proprietary seal design that compensates pneumatically to any pool system variation using a half to 10 horsepower pump. This seal system is comprised of a rubber o-ring that is mounted on a moving disc and positioned in such a way to perform dual face and radial sealing. The face sealing is responsible for blocking the atmospheric air from entering the pump during normal operation.
