Whale Mk5 Toilet Sanitation Hand Pump BP0527.

Robust easy action fully enclosed manual black waste pumps. 
Whale has led the way in manual diaphragm pumps for the marine world for decades. The Mk 5 sanitation is a reliable fully housed black waste pump – reliability when you need it most 
Can be mounted in various orientations/positions 
Tough plastic housing keeps in nasty smells 
Large virtually unblockable valves 
Easy to clean (no tools required) 
High performance- 56 ltrs (14.8 US gals) per minute 
wide hose connections for maximum performance - 38 mm (1½”) 
Lightweight design for easy operation 
Ideal for use in conjunction with Whale’s robust and durable Diverter Valve 1 ½” ports – DV5606

Pump Type: Manual

Mounting Orientation: On Bulkhead