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.
Whilst Trump is the 45th president, he is only the 44th man to hold the office because Grover Cleveland held two non-consecutive terms and is counted as the 22nd and the 24th president. 1  Complete List of Presidents of the United States. 2  Presidents Who Died In Office. 3  Vice-Presidents Who Died In Office or Resigned.