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Under The Sink Drain Pumps

UnderThe Sink

Under the sink drain pump are used to pump the drain water for laundry tray sinks, bar sinks, multi-compartment sinks, utility sinks, dishwasher, washing machines and other basement remodeling projects. Under the sink drain pumps allows the freedom to install fixtures where gravity drain lines are not available. These units are designed to for gray wastewater applications. They are not designed for use in septic tanks or underground vaults to handle raw sewage or effluents. Never use these units in hazardous or explosive locations nor for pumping chemicals. The systems arrive fully assembled and are designed to be installed above ground. These economical water removal systems are great for basements or areas where the main drain is higher. Systems are UL listed, CSA approved, and the basins are IAPMO approved. They allow the freedom to install fixtures where gravity drain lines are not available. The units are designed to fit under most sinks, so in many cases it is not necessary to recess the unit into the floor. Tanks and pumps are shipped in separate cartons to protect during shipment. Assembly is required. An open vent must be used. A Studor vent or equal device cannot be used.

Capacity Table In Gallons Per Minute
Brand Model HP Basin
(Gal)
Head In Feet Shut-off
5 10 15 20 25 30
Gallons Per Minute (GPM)
Liberty 404 1/3 4.3 35 28 16 - - - 20 '
Little Giant WRS-6 (506055) 3/10 5.5 44 28 10 - - - 17'
Little Giant WRSC-6 (506065) 3/10 3.5 44 28 10 - - - 17'
Goulds SDS1 4/10 10.0 53 46 35 21 - - 24
Liberty 405 1/2 5.5 50 45 37 30 22 10 34
Liberty SPAC-457 1/2 - 48 45 38 33 23 12 34

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