THE CALL was routine enough — little to no pressure on the upper floors when water was drawn on the lower ones. This was a well-water system, so my first thoughts turned to pressure setting, pump ...
Tomas Lenman started at Wirsbo Bruks AB in Sweden in 1971, where he developed the production process for the first PEX process. In the North American market, he wrote the ASTM F 876/877 and CSA B137.5 ...
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