The Whale MK5 thru-deck manual sanitation pump mounts through the deck, so the handle sits topside while the pump body stays below. It moves up to 56 L/min (14.8 US GPM) with 38mm (1-1/2 in) hose connections. It is listed for use with Whale’s 1-1/2 in diverter valve.
A manual diaphragm pump needs no electrical power, so it keeps working even with a dead battery. Large non-choke valves let it move waste reliably. The diaphragm can be serviced and cleaned without special tools.
Deck mounting puts the pump-out controls where they are easy to reach for holding tank discharge where permitted. Check hose sizes, tank routing, seacock arrangement, and local sanitation rules before installing. Browse more Macerator & Waste Pumps for bulkhead-mount versions and other pumps.
Key Features
- Thru-deck mounting
- Up to 14.8 US GPM
- 38mm (1-1/2 in) hose connections
- No electrical power needed
