Henderson Double Action Manual Pump manufactured by Henderson.

• The free flow valve design makes the Mk5 ideal for a variety of pumping applications such as bilge, diesel transfer, emptying effluent tanks and vacuum toilet pump out.
• Suitable for both floor and bulkhead installations and can also be converted to through deck installation.
• The quick release cover makes for easy access and inspection of the diaphragm and valves, as well as clearing obstructions.
• Constructed from stainless steel, phosphor bronze, acetal, glass reinforced polypropylene and nitrile rubber.