F4B-11 ULTRA BALLAST – CAPACITY 52 L/MIN 13.5 GPM SKI /WAKEBOARD Designed to quickly fill or, when reversed, drain a ballast tank. Capable of pumping fresh or sea water, the pump’s robust design can handle the rigors of continuous duty usage, is reversible, and has a built-in thermal overload for added protection. Polarity reversing switch kit (Part No. 09-47196) available as accessory. Important! Only for use with water. If risk of dry-running over 30 sec. use Polyurethane impeller. Bronze pump.F5B-19 – CAPACITY 55 L/MIN 14.5 GPM Perfect for bilge pumping, deckwash, water circulation, oil and diesel refuelling at dockside service, etc. Bronze pump.