By spotlighting these inventions of significance, we pay tribute to the innovators
of the past and hope to instill a greater appreciation of the PHC trade heritage.
We also hope to instill better understanding of how certain products work.
In producing this year's installment of "Greatest Plumbing Inventions," we
required that all items submitted for consideration had to be invented prior to
1975. We wanted to focus on innovations that have withstood a test of time, as
opposed to those that may prove to be passing fancies or reveal unforeseen
defects a few years down the road.