I am designing a conv. store. We need to pump the sewage. We need 20 gpm at 30' of head. Due to low flows we need to use a 2" pipe which dictates the use of a grinder pump station. Preliminary cost estimate for a pre-packaged Flyght system is around 25K. Do I have any alternatives? this seems to be high for a convenience store.  You're right, the flygt is too big for this application and I light Flygt pumps.The Myers is a good system (used many of them); however, make sure you use a Magnetic pump 2hp motor.  There are a lot of 1hp units and they look fine for the pump curve; but, they tend to burn out early due to the grinding needs.  The 2hp units have a little more power for the grinding application.Why do you need a duplex unit?  Use a simplex and purchase a spare pump.I just personally purchased a simplex station for our church with a Myers pump, guide rail installation, all of the wetwell piping, valves, controls, and 8'x30" fiberglass wetwell for $3,500.  That doesn't include power to the panel, wiring between the panel and pump, or inlet/discharge piping; but, your above prices are way out of line for even that if it is close to your building.A "quality" step system will use the same setup only a pump without the grinders so the cost will be similar except you also have a septic tank and routine sludge removal.  You can get the cheap step systems with a submersible well pump; but, I think you will regret it once you begin replacing the pumps.

2011-08-10

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