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.
The biggest gap for a President is that between John Tyler (born 29 March 1790) and his second wife Julia (born 4 May 1820); they were married on 26 June 1844. The biggest gap for a first marriage on both sides is the 27 years between Grover and Frances Cleveland.