What is PEX? PEX is an acronym for crosslinked polyethylene. It is a flexible, durable, proven piping product that has been used in plumbing systems for more than 20 years. PEX tubing wonât pit, scale or corrode and, because of its flexibility, it also offers potential freeze-damage protection. Uponor plumbing systems feature PEX-a tubing, which is considered the superior PEX tubing manufacturing method in the industry.
Answer Wiki. Ronald Reagan is the only U.S. president who has been divorced. One First Lady, Betty Ford, married and divorced before marrying a second husband, who became President Gerald Ford. Andrew Jackson's wife, Rachel, was divorced by her first husband, Lewis Robards, because she lived with Jackson while still married to Robards.
1 Grover Cleveland, President 1885-89 and 93-97, bachelor upon taking office, married 1886 (the only one to have the actual wedding take place in the White House)  Woodrow Wilson, President 1913-1921. His first wife Ellen Axson died in 1914, and he married Edith Galt in 1915.