For years we sold the baby blue colored steel tanks with the polyetherueethane (PEU) diaphram. These tanks worked well but had an unacceptable premature failure rate and rusted often times in less than ten years. With the advent of the newer fibergalss pressure tanks with the same PEU diaphram, these tanks have been proven in the last 8 years of being our preferred tank to be a much better choice for our customers. Benefits are no rusting out, lower failure rate (less than 1/2 of 1%), have much less condensation (sweating) than steel tanks, and do not plug up with mineral deposits where the water comes into the tank. Best of all, they are less cost and offer longer cycle times than their comparable steel counterparts.
However, for the die hards, we do carry the full line of AMTROL baby blue Well-X-Trol products if the customer desires however.