Dekker Vacuum and Partial Recovery Water-Sealed Vacuum AquaSeal systems are available in capacities of 20-10,000 CFM. It can be offered in a wide variety of materials for tough applications. About 50% of the seal-water can be re-circulated, and adding fresh seal-water for the total make-up. Consideration must be given to heat build-up. Product Features for applications where water saving are desired. Part of the water discharged by the pump is re-circulated reducing 30-50% water usage. Complete package includes all necessary components. Available in a wide choice of materials to customize ones needs. Available in single-stage or two-stage liquid ring pumps.