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Whale Water Systems BP4772 Gulper Grouper MK3 Fishbox Waste Discharge Pump 12V 4.2 GPM

Manufacturer

Whale Water Systems

<p>Whale Water Systems, established in 1946, has been at the forefront of marine pump technology for over seven decades. Now a proud part of Navico Group (a division of Brunswick Corporation), Whale is a committed leader in connected water systems for marine applications. With a reputation built on innovative engineering and unwavering reliability, Whale has become the go-to choice for boat owners, recreational mariners, and commercial vessel operators who demand performance and durability in challenging marine environments.</p><h3>Engineering Excellence for Every Onboard Water Need</h3><p>Whale makes outdoor living easy and enjoyable with a wide range of quality low voltage pump, heating, and water systems, delivering true independence and freedom with complete systems designed for use on the water. From bow to stern, Whale's comprehensive product lineup addresses every aspect of onboard water management. The brand's dedication to innovation is evident in their development of specialized solutions including the world's first low-profile electric bilge pump, showcasing their commitment to space-saving design without compromising functionality.</p><h3>Complete Water System Solutions</h3><p>At the heart of Whale's marine offering is their extensive range of <a href="/7648-whale-water-systems-pressurized-water-system-tubing-fittings-200807">pressurized water system tubing and fittings</a>, which form the backbone of reliable onboard plumbing installations. These marine-grade components ensure leak-free connections and consistent water flow throughout the vessel. For bilge management, Whale's <a href="/7648-whale-water-systems-manual-bilge-pumps-200649">manual bilge pumps</a> provide dependable backup solutions when electrical systems aren't practical or as emergency redundancy.</p><p>Whale's freshwater range includes the highest quality marine-grade electric and manual pumps, and a full range of accessories to deliver a smooth and consistent on-board freshwater supply. Their <a href="/7648-whale-water-systems-aft-decktransom-showers-200072">aft-deck and transom showers</a> bring convenience to any vessel, while <a href="/7648-whale-water-systems-showerfaucet-mixers-200946">shower and faucet mixers</a> offer precise temperature control for comfort in galley and head installations. The brand also manufactures critical electrical components like <a href="/7648-whale-water-systems-float-switches-200426">float switches</a> that automate bilge pump operation, providing peace of mind for vessel owners.</p><h3>Built for Marine Environments</h3><p>Whale is a well-known brand with a reputation built on decades of high quality design expertise, supplying the marine, caravan, motor home, shower drainage and industrial markets around the world with innovative freshwater, bilge and waste pumps and water & space heating systems. Every Whale product is engineered to withstand the harsh conditions of marine use—saltwater exposure, constant vibration, temperature fluctuations, and the demanding duty cycles that come with life aboard. Whether you're outfitting a small sailboat or a large commercial vessel, Whale Water Systems delivers the reliability and performance that mariners have trusted for generations.</p>

Part Number

BP4772
06/21/2036 4:42 PM
Sale Price

$181.57

In Stock (6)

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Product Details

The Whale Water Systems Gulper Grouper MK3 is a heavy-duty fishbox and waste discharge pump designed specifically for marine applications. This 12-volt pump delivers 4.2 gallons per minute of reliable pumping capacity, making it ideal for removing fish waste, blood, and debris from fishboxes and holding tanks.

Key Features:

  • 90° port orientation allows direct replacement of existing macerator pumps in tight, compact installation areas
  • Patented non-choke Gulper valve technology eliminates the need for filters and prevents clogged impellers
  • No macerator blades means significantly reduced risk of motor burnout from blockages
  • Handles solids and debris that would jam traditional macerator pumps
  • 12-volt DC operation for standard marine electrical systems
  • 4.2 GPM flow rate provides efficient waste removal
  • Durable construction built to withstand harsh marine environments

The MK3 Gulper Grouper offers superior reliability compared to traditional macerator pumps by using a proven diaphragm pump design with no impeller to clog. This makes it an excellent choice for fishbox discharge applications where fish scales, guts, and other solid waste can quickly disable standard pumps.

Products specifications

Gallons Per Minute

4.2

Port Type

Inlet: 1 1/2"; Outlet: 1"

Voltage

12

Easy, easy, easy

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reasonable prices and free ship

good so far

Good.

Nice and simple!

Lowest price for my engine bolt set, beat Jeg's and Summit by quite a bit! I will definitely be checking Autoplicity for future needs.

Very easy

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