Rancher said:
Or, he replaced his submersible pumps with a more reliable brand... even with a small tank, they should have lasted longer than a year, short cycling may have contributed to an early death, but I'll believe that when I see a study done (the engineer in me). Perhaps he had dirty power, or sand in his water, or the wrong size pump for the depth.
Rancher
The pumps were shallow well jet pumps with 2'' wells about 60' deep, exposed to the elements here in Florida and yes that inof itself contributed to their demise. The pump would cycle with 1 toilet flush. Larger bladder tank and I got 8-10 flushes.
Still I believe the CSV has a very valid purpose within a system that either requires its use or a system is designed around its value to make the system better.
For me it all goes back to the end users needs/expectations. Most home owners cannot afford to enlist the services from a licensed mechanical engineer to size & design a water piping system for their homes or irrigation for that matter. This leaves it up to the plumbing subcontractor to install it to "code" as they say.
This guy never does any calculations of pipe size for selected fixtures/recovery times/pressure fluxuations/peak demand gpm etc.... and the list can go on even if its a water source from a local utility. So the home owner installs a multi head shower system and complains about the water pressure because the "plumber" isn't paid to provide that level of service, if he's even qualified, to calculate the required pipe size from the point of entry to the point of service.
I can't do it but I knew enough to size my supply large enough to each fixture and install a pump capable of pushing enough water thru those pipes with a comfortable margin of error. But even that was based on my experince in the field and relative to practices used in my area. The science of good water pressure starts way beyond most of the discussions we have here. You guys hear a lot of questions and most of your replys can be attributed solving problem created by poor design in the first place.
I find this entire forum most interesting to say the least. I wish I was better educated to participate at the next level.
Jeff