Cookies

The cookie settings on this website are set to ‘allow all cookies’. Leaving your settings to ‘allow all cookies’ means you consent to a website remembering your preferences and generally enhancing the user experience. If you prefer a website to not remember your preferences, you can change your settings at any time by changing the privacy settings of your browser.

Find out more about cookies >

Gulper Grouper

Gulper Grouper

Gulper 320 - Easy access remote mount bilge waste pump and strainer system featuring non-clog electric valve technology

Whale Gulper Grouper

Non clog no filter waste pumps built on more than a decade of market leading pump technology.


Replace your macerator with the ultimate fishbox waste pump - Gulper Grouper - the non choke fishbox waste box suits standard 1"/ 1 1/2" hose connections


NEW Gulper Grouper Mk 2
• Enhances Priming Capabilities
• Quieter Pump


  • You can depend on diaphragm pump technology : No impeller to clog or burn
  • Non-choke valves- easily handle fishbox waste 
  • Save money - Single pump for multiple wells 
  • Easy to install - 360 degree head rotation and choice of 1" or 1 1/2" hose connections to suit your installaton needs 
  • Easy to maintain and clean 
  • Ideal replacement for macerator pumps 
  • Fast pump out - up to 6.75 US gals/ 25.5 ltrs per minute 
  • Long term durability - runs dry without damage
  • Fit in convenient locations - Multi-directional head position
  • Save battery - Low power consumption

Service Videos

Instant Match Wireless Kit - How it works

CodeNameHose Connections "Voltage
BP4572Gulper Grouper - Fishbox evacuation pump (12 V d.c.) (flow rate 440 US gals / hr)112V
BP4574Gulper Grouper - Fishbox evacuation pump (24 V d.c.) (flow rate 440 US gals / hr)124V
BP4672Gulper Grouper Mk 2- Fishbox evacuation pump (12 V d.c.) (flow rate 285 US gals / hr)112V
BP4674Gulper Grouper Mk 2- Fishbox evacuation pump (24 V d.c.) (flow rate 285 US gals / hr)124V
  • SB3422 Image
    SB3422 3/4" Strainer / Strum Box (top / entry outlet)
  • SF5018 Image
    SF5018 Skinfitting Plstc 5/8" Hose Connections
  • SF5131 Image
    SF5131 Skinfitting Plstc 3/4" Hose Connections
  • SF5204 Image
    SF5204 Skinfitting Plstc 1" Hose Connections
  • SF5425 Image
    SF5425 Skinfitting Plstc 1.1/2" Hose Connections
  • DV5630 Image
    DV5630 Valve Diverter 1"
  • DV5606 Image
    DV5606 Valve Diverter 1.1/2"
  • SB4222 Image
    SB4222 Strainer / Strum Box - Side Entry
  • SB5865 Image
    SB5865 Strainer/ Strum Box - Top Entry
  • YP6114 Image
    YP6114 Hose Fitting Y-Piece 1.1/2"
  • AK1557 Image
    AK1557 Service Kit - Whale Gulper Toilet Pump - Diaphragm, Valves and Fixings
  • Whale Marine Brochure (English v12)
  • Fishing Boat Product Range
  • Whale Marine Brochure (French v2)

Whale products and services are available worldwide.
First choose a region, then select the country below for a list of distributors ( for trade/ retail customers) and retailers ( for consumers).

Or Company Name