Apollo | sku: 309830183 Apollo 3/4 In. X 500 Ft. White Pex-A Pipe Apollo Expansion PEX is cross-linked polyethylene tubing designed for use within potable water piping systems. Produced using a Peroxide method, Apollo Expansion PEX is PEX-a pipe. Having been in use for over 50-year PEX-a pipe has the highest rate of... Log in for pricing