Never site a pump directly on the floor of the sump chamber. some pumps come with a good pump stand to keep the impeller out of the silt than can collect in the bottom of the sump chamber. Either make sure that the pump has its own built in stand (minimum 50mm) or that the sump system includes one. if noise is going to be an issue the oil filed pumps do tend to make more noise for the same level of performance, this is a result of the pump having to work harder, burn more energy for the same work done and more precision engineering that the more modern air-filled pumps have.

So what happens if the primary pump fails or there is a power cut? There should be at least one back up- pump that can take over in such an eventuality. Battery pumps are the most common and these are essential in the event of a mains power failure but they tend to be less powerful and less reliable than a mains pump. The best combination is a twin mains pump so that another mains pump comes on in al failure events other than a power cut, plus a battery back up pump to protect during the power outage. Some pumping systems have a back up pump that can run off both mains and battery so a twin pump system is all that is required if you have one of these as your back up pump.

Company Resource:   Heat Pump Water Source Heat Pump, Waste Water Source Heat Pump
Read more:  http://www.cn-skysea.com/news/