Fountain Controls and Accessories Drains and Fittings Overflow Drain – DOA Function The DOA is a combination overflow and pool drain. Specifications Excess water overflows into standpipeSlip connection to standpipe facilitates removal for drainingAvailable with optional debris screen, other standpipe sizes or underdeck clamps for low-tile applicationsMade of cast bronze with copper standpipe and stainless-steel fasteners PDF File Overflow Drain – DOL Function This light duty, wall-mounted overflow drain regulates water level. Specifications Excess water spills over adjustable weirSingle screw adjusts overflow tube to desired level after installationAvailable with optional surface flange or membrane clampMade of cast bronze