Piping information

Many plumbers are switching to PEX systems.
It's a product that's been used in Europe for thirty years.

Copper is still widely used also. The link below has a copper sizing chart that helps with standard issues. It's a good idea to read up a bit on it ifyou're considering doing your own plumbing.
Water pipe sizing

If a system is sized right, you will not even be thinking about except in good glowing terms.
A poorly sized system will rack your brains.

Piping information here

Sizing it right!

For handy homeowners, make sure you are sizing your pipes right.
Remember, you biggest savings is the labor.

You shouldn't skimp on pipe and fittings.

Water pipe sizing