A modification to mechanical joints (Section 605.17.2) has been made to the 2009 International Plumbing Code (IPC). The code change will ensure that the correct combination of tubing and fittings will be installed together for crosslinked polyethylene plastic (PEX) systems.
A modification to prohibited installations, air admittance valves (Section 917.8) has also been made in the 2009 IPC. The prohibited locations of air admittance valves (AAVs) has been expanded to address sump vents. Installations using an AAV for a sump vent shall be in accordance with the engineered design criteria of Section 105.4.
The code change will ensure that the correct combination tubing and fitting will be installed together for cross linked polyetylene plastic (PEX ) systems.
605.17.2 Mechanical joints shall be installed to manufacture's instructions. Pex tubing shall be marked with appropriate standards for the fittings that the pex manufacturer specifies for use for the tubing.
There are four common systems of pex or PB pipping:
1) Pb with metal insert commpression fitting.
2) PB with a plastic gray Fitting made from acetal resin;
3) PB with manifolds (normally metal,but can be plastic);
4) PB with the manabloc manifold syetem.
The first two systems were installed between January 1, 1978 and
July 31, 1995, you as a purchaser rights Under the national class action lawsuit
was ended January 31,2009.
