Whale Water Systems Shower & Sink Drain Pumps
Whale Water Systems: Marine-Grade Shower & Sink Drain Pumps
When it comes to managing gray water on a boat, few challenges are as unglamorous — or as important — as reliably draining shower sumps and galley sinks. Whale Water Systems has spent decades engineering purpose-built solutions for exactly this problem, and their Shower & Sink Drain Pumps lineup stands as some of the most trusted hardware in the marine plumbing world.
Whale's parent company, Munster Simms Engineering, was established in 1810 and has a storied manufacturing history — including producing brass bilge pumps for the Royal Navy during World War II and launching pumps into the marine sector in the 1940s. That deep institutional knowledge shows in every gray water pump they make today.
The Gulper: A Non-Clogging Standard-Bearer
The centerpiece of Whale's shower and sink drain pump offering is the iconic Gulper series — most notably the Gulper 220. The Whale Gulper 220 is a non-clogging, filterless waste pump built on more than a decade of market-leading pump technology, and it is an ideal solution for handling shower or sink drainage and other gray water waste.
What makes the Gulper design stand out from conventional drain pumps is its approach to the clogging problem. The Gulper 220 reliably pumps shower waste including hair and gels, and features virtually unblockable valves with no filter to clean. For any boater who has ever wrestled a clogged bilge strainer after a week-long cruise, that filterless architecture is a genuine game-changer.
The Gulper is self-priming up to 3 meters (10 feet), features a double-outlet valve that ensures continuous flow, and will run dry without sustaining damage — it can even pump a mixture of air and water. This dry-run capability is particularly valuable on vessels where sumps can vary unpredictably in fill level.
Complete Shower Drain System Solutions
Whale doesn't just sell standalone pumps — they offer integrated gray water management kits that simplify installation and reduce the number of through-hull fittings required. The smart approach of the Gulper Shower Drain Kit enables plumbing of all gray water hoses to one location; with eight inlet ports accommodating a variety of hose sizes, it connects to a Gulper 220 pump via an automatic float switch that routes gray water to either a holding tank or overboard — reducing through-hull fittings to just one.
These self-priming pumps handle waste water from the shower and can also drain the galley sink, making them particularly valuable when sink drain lines run below the waterline. That versatility is why Whale's drain pumps are found on sailboats, powerboats, and cruising yachts of all sizes.
Built for the Harshest Marine Environments
Whale is a well-known brand with a reputation built on decades of high-quality design expertise, supplying the marine, caravan/motorhome, shower drainage, and industrial markets around the world. Now a proud part of Navico Group, a division of Brunswick Corporation, Whale is a committed leader in connected water systems for marine applications. Their shower and sink drain pumps are designed to operate reliably on 12V or 24V DC systems, withstand saltwater and detergent-laden waste, and require minimal servicing — backed by a full line of service kits to extend pump life for seasons to come.
Whether you're outfitting a new build or upgrading an aging gray water system, Whale Water Systems shower and sink drain pumps offer the filterless reliability, self-priming performance, and marine-proven durability that serious boaters demand.