Grey Waste Tanks with Intelligent ControlRobust compact tanks with multi-port options to suit your installation.Whale’s Largest Range of Multi-Port Grey Waste Tanks Ever!Simple system - Allows you to manage all grey waste on board through one thru-hull fitting.Resilient polyethylene one-piece moulded tanks designed to handle grey waste on board - ideal for use with Gulper Grey Waste pumps for unbeaten debris handling.8 liter capacity grey waste tanks - compact design allows you to mount a Gulper pump directly to the side to save space and simplify pipe runs.16 liter capacity grey waste tanks - higher capacity design allows you to mount a Gulper pump directly to the side to save space and simplify pipe runs.20 liter capacity grey waste tanks - outlet ports and sensor locations minimize air pumping noise.Grey waste tank lid with fully integrated sensor:Intelligent Control - sensor activates pump automatically to empty grey waste tank only when requiredRobust - enclosed housing with dual seal ensures the best component protection in the harsh grey waste environmentReliable - designed to reduce dirt and debris build-upCompatible - lid design allows retrofitting to existing Whale grey waste tank systemsSimple installation - two wires can connect to any 12 or 24V pump system, up to 20A, with no requirement for a relayWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.