Bilge pump It's the best for boatsand yachts. Run dry with damage; Easy clean strainer;Low amp draw;Long pump lifetime; Design features: 1. Heavy duty motors with stainless steel shafts and tough thermoplastic bodies. 2. Totally submersible and ignition protected. 3. To all existing safety standars. 4. Water cooled motors for long life,with anti airlock design and moisture tight seals. 5. Snap-lock strainer base for easy installation and removal. Silent vibration free running. 6. No burn out if run dry Material: 1. Pump body: Thermoplastic 2. Shaft seal: Lip seal 3. Shaft: Stainless steelModelFlow rateVoltsCurrentDischarge fittingsHeadAD350350GPH12/241.8A/1A19mm3MAD500500GPH12/242.2A/1.2A19mm3MAD750750GPH12/242.5A/1.5A19mm or 29mm4MAD11001100GPH12/243.0A/1.5A19mm or 30mm4MA D15001500GPH12V/24v7A/5A29mm5MA D20002000GPH12V/24v8A/5.5A29mm6MAD30003000GPH12V/24v10A/6A40mm8MAD35003500GPH12V/24v12A/8A40mm8MAD37003700GPH12V/24v16A/10A40mm8MAD47004700GPH12V/24v30A/15A40MM10M