The bladder my 10 year old 125Gal Flotec let go (spraying water from the valve when I attempted to check the air pressure). When I purchased it 10 years ago, from one of those big name home improvement stores, I wasn't able to find much information on the net. Now that I know better and I won't be buying another Flotec.
Anyway, after much research it seems the pside-kick will be a near perfect solution. I say near perfect because it's just my wife and I, with normal water usage, (i.e. showers, toilet, laundry, dishwasher) but no irrigation system of any kind. I only mentioned this because (like others) I'm concerned about the pump kicking in with every gallon of water usage. I know the argument is the elimination of frequent cycles during long use times (showers and laundry) will offset the extra cycles toilet flushes, brushing teeth or shaving etc., but I can't help but think there will be more of these short periods of water usage cycles. Too many in fact, to be offset by the cycles saved during long water use periods. With that thought in mind... I was originally planning on installing a CSV1W with a Flexcon WWT-20... but... I'm 60. Although 60 I'm in great shape and can still easily wrestle the old 125Gal out and a new 20gal tank in under the house. My concern is in the future... (say 20 years from now) of having to change out the 20 gallon tank. While swapping out a 20Gal might be near impossible, I'm hoping I should still be able to replace the little 4 gal on the pside-kick. For this reason I hoping I can get by with just the pside-kick.
Which leads me to the original subject of this thread. If I install the pside-kick... then after a month or so I decide I would be better off with a 20 gal tank... can I simply install the 20Gal tank downstream of the pside-kicks 4gal tank?
In theory I'm thinking the CSV won't care there if there is more than one tank... and it will simply allow the pressure to rise in both tanks until the pressure switch shuts off the pump. NET: Can I use a second tank in conjunction with the pside-kick?