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Get Powered Up! Certified Energy Manager Jeff Yago answers your alternative energy questions

Wondering about a great new energy-saving device
you found on the Internet? Then CLICK HERE!

Sorry. Jeff no longer answers questions online.
This will remain as a searchable
resource for all BHM website visitors.



Water pump & pressure tank

Sunday, May 31st, 2009

Hi Jeff,

I read about a water pump for a house that doesn’t require a pressure tank. I’ve lost my information and hope that you’re aware of the manufacturer.

Louis

Louis,

There are lots of manufacturers of water pumps that do not require a pressure pump, but I do not recommend you putting one of these on a home.

This type of pump is designed for an RV or boat where you have a holding tank full of water, and the water flow rates, pressures, and piping system are all small. These pumps include a very sensitive and fast-acting pressure switch which turns the pump on and off when you open and close a nearby faucet. If you tried this with the larger pump sizes and flow rates of a typical home, the water hammer alone would soon either cause a fitting failure or damage the pump.

In addition to absorbing the pumping shock of quickly stopping the water flow, the expansion tank also saves wear and tear on the pump because any single toilet flush or short hand-washing most likely can be supplied from water stored under pressure in the pressure tank and will not require cycling the pump every single time.

On smaller RV and boat systems with a holding tank as the source, these problems are not that big a deal.

Good luck,

Jeff Yago

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