Typically used in boat hulls / bilges. Will not burn out when run dry. Ignition protection to protect the pump against high current. Water cooled long-life motors. Other applications where you have to remove water from.
eBay
Built-in check valve prevents water from flowing back into the bilge, ensuring a dry and efficient bilge system. Low profile strainer fits in tight or awkward spaces and leaves the bilge almost dry. Max Draw: 4.2A.
eBay
Application: can be used in boat bilges, pools or other applications where you have to remove water from. 1 x Automatic Bilge Pump. Will not burn out when run dry. Compact, efficient, water cooled long life motor.
eBay
Automatic Bilge Pump +Hose + Thru Hull Complete Set. Choice of Auto Bilge Pump: 550 GPH / 1100 GPH. PVC Thru - Hull Included Included. Fuse 4 Amp (Max) 5 Amp (Max). Hose Size 19 mm 28 mm. PVC Hose Length 5 ft 6 ft.
eBay
Size: 1500 gph in 12 and 24 volt versions. 5201036A 1500 GPH 12V 8A 4m 1 m 29 mm/1-1/8" 1.13/1.20 kg. Marine grade blocked wiring. Pump and switch are stand alone products. Duty Cycle. 110°F (43°C) Max.
eBay
Seaflo Narrow Low Profile 12v Bilge Pump 800gph. Low profile strainer for virtually dry bilge. Flow rate: 800 GPH / 3028 litres per minute. Five blade high flow impellor. Fully Sealed. ISO 8846, ISO8849, CE, RoHS standards.
eBay
Low amp draw conserves batteries. Light, compact pump for ski-boats and small vessels. Add a Rule-A-Matic Float Switch to make the make the pump automatic and add a Panel Switch to complete the install.
eBay
Capacity: 1100GPH / 4160LPH. Built in float switch to turn on the pump when the water level rises (approx 40-50mm), then turns it off once the water is removed (20-30mm). Can be wired to use as a fully automatic pump, manual pump, or to a 3 way switch so you can use both.
eBay