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Double Acting Mk 5

Double Acting Mk 5

Robust and lightweight polypropylene manual bilge pump range

Tough proven, reliable double acting pump - empty 2 bilges compartments at the same time or one twice as quickly.

Since the 1940s Whale engineers have refined our manual bilge pump designs and completed extended life testing - the result? Whale's iconic manual bilge pump range.

High output - 104 ltrs/23 US gals/minute
Twin diaphragms - empty 2 bilges compartments at the same time or one twice as quickly - 2 manifolds supplied

Heavy duty bilge pump ideal for larger craft where high output is vital.

  • One pump does all- can empty two bilge compartments simultaneously
  • Lightweight, powerful performer
  • 3 models available for mounting on or through deck or bulkhead
  • Efficient performance for larger craft where high output is vital
  • Approved by Lloyds and USCG for use in lifeboats


It is important to ensure that a vented anti-syphon loop is incorporated in the system

CodeNameMounting OrientationRange
MH5550Double Acting Mark Pump Hend Mark V Da-b (bulkhead)On Deck / On BulkheadTough and lightweight Polypropylene
MH5560Double Acting Mark Pump Hend Mark V Da-b (underdeck) Thru DeckTough and lightweight Polypropylene
MH5570Double Acting Mark Pump Hend Mark V Da-b (on deck ) On Deck / On BulkheadTough and lightweight Polypropylene
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    SF5425 Skinfitting Plstc 1.1/2" Hose Connections
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  • SB4222 Image
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    SB5865 Strainer/ Strum Box - Top Entry
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    EB3488 Hose Fitting Elbow 1,1/2"
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    YP6114 Hose Fitting Y-Piece 1.1/2"
  • Whale Marine Brochure (English v12)
  • Whale Marine Brochure (French v2)

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