Before extrusion, the HDPE can be pigmented to yield color-coded pipe. Common PEX tubing colors are natural (hazy clear, unpigmented), white, black, red and blue. The red and blue colors are used to help plumbers and homeowners distinguish between hot and cold water supply lines.
No, there has never been a US President from an independent party; however, at the time of his presidency, George Washington was not affiliated with a political party at all, as there were no parties in the brand new United States of America.
No American president has talked about American exceptionalism more often and in more varied ways than Obama. As an Illinois state legislator, young U.S. senator and presidential candidate, he spoke about it most frequently through the prism of his own remarkable story.bama has since his first days in the White House seemed to be searching for an American exceptionalism that felt true to his life experience. As a new president, he dismissed the very idea, noting that Greeks and the Brits think their countries are special, too.