PLUMBING HISTORY

2. Cross-linked Polyethylene
4. By the 1940's, this material had become the predominant material for residential plumbing systems.
7. Company that introduced the first one piece cast iron sink in 1900.
9. Type of pipe used for sewers. Brought to the U.S. form Europe in the 1060's. ______ Iron.
10. First empire to provide large number of citizens with plumbing.
12. Romans built these to bring water to the city.
15. Another term for Toilet.
16. Englishman that sold but did not invent the water closet. (Thomas)
18. The first propane torch was developed in the 1950's by this Rochester company.
19. Part of the drain/waste system that prevents odor and sewer gases from entering a home.

1. Plague that killed nearly 25 million people in the mid 1300's.
2. Polyvinyl Chloride
3. Occupational Safety and Health Act
5. Latin word for Lead.
6. Iron pipe coated with zinc metal to prevent rust.
8. Invented in 1933, this sewer machine allowed drains to be cleared without digging.
11. Health law passed in 1870 in NY providing sanitary plumbing for every building.
13. Built the first wash down water closet in 1595, and installed one for queen Elizabeth. (first name John)
14. 400-100 AD. Time of filth, squalor, and uncleanliness. _____ Ages
17. Patented in 1870, the "Stillson wrench" became better know as a __________ wrench.