Mar 16, 2003, 1:15 PM
Post #11 of 15
Re: [Don] To Rolly or ET (Pressure Pumps) NEW
Can't Post | Private Reply
Unfortunately, you're looking for reassurances that can't be provided to you remotely.
1. To check pricing, you have to get local bids. You also have to make sure that the bidders are quoting for comparable systems in design, materials, and installation practices.
2. There's no information on your existing system, as to whether it was built to the equivalent of the UPC, the materials used, or the quality of construction.
3. Electrical usage will be a factor of (a) water usage patterns, (b) how the system is designed, and (c) whether electricity consuming components, specifically pumps are correctly sized. Oversized pumps use unnecessary amounts of energy when activated; undersized pumps have to run longer (and as a result may fail earlier) and consequently have to use more energy. On a household scale, I can't see anything close to a reasonably designed pressure system using large amounts of energy, but there's a lot of things I can't visualize.
Some general thoughts include:
A. If it were my system, I'd make sure that each of the major block of components (ground reservoir), roof tank, pressure pump and tank, etc. had bypass plumbing in case they failed or required repairs. Check to make sure these bypass and component isolation valves actually work before you release the contractor - when you've got water running out of the tank and into the house isn't the time to find you're short a valve.
B. Make sure that the plumbing subsystems all have backflow prevention incorporated, both individually and collectively. Raising total system pressure should actually reduce the possibility of backflow and system contamination, but without knowing the design details it's impossible to say.
C. If you're using the system for anything resembling potable water, make sure to flush and then disinfect the entire system after installation work is completed and prior to bringing the system on line.
D. Naturally, if you're adding tanks to the roof, watch both your area (point) and total loading.