I didn't design it, but the FM runs generally downhill because of the local terrain. To run it as a gravity line would have required depths in excess of 50', so that wasn't viable. To use a combination of gravity and FM would have required a dozen or more lift stations, so that wasn't viable...
This doesn't apply specifically to the question above, but for some reason it won't post. I'm running a FM generally downhill and am having problems with gas generation. I haven't found any experts yet, so my question is below. Thanks.
I recently completed start-up of a lift station only...
I recently completed start-up of a lift station only to find that the force main to which we connected is lacking a number of air/vac combo valves. The FM runs generally downhill, so I expected sections of the line to be empty (drained by gravity) between pump cycles. Instead what I've found...
