These Air pumps are piston driven and they require no maintenance as they are oil free so you wont have to replace diaphragms like with other air pumps. Features: The case is made of high-quality ZL102 aluminum alloy with streamline design, and heat-dissipation is more effective. Place the Air machine above water level to protect water from flowing backwards, or fit with a non-return valve. Six air stone manifold but the pump can easily pump in excess of twelve air stones. Specifications 50L/Min Air Pond Pump Has 6 outlets to run up to 6 air stones in your pond. Pressure: 0.03MPa Output: 50L/Min Watt: 45w Dimensions 181 x 94 x 118mm Complete with 1.5 metres of cable and a 3-pin (UK) plug Approvals: UL,G/S,CE Voltage: 220-240V 12 month warranty.
Features: 
The case is made of high-quality ZL102 aluminum alloy with streamline design,
and heat-dissipation is more effective.
50L/Min Air Pond Pump
