PEX brass with zinc.

With the advent of pex becoming more prominent in plumbing repairs, retrofitting and new installations, its it’s ease of use that makes it attractive. If you come upon pex, look at brass fittings for suspect conditions.

One shortcoming is zinc within the brass.
Others are crimp and attachment placement dezincification.

Zinc is a ***highly reactive meta***l and it has a weak ability to bond to other metals at the atomic level. When water flows through the fittings and valves it corrodes the metal; zinc leaches from brass and creates a powdery buildup inside the fittings. This corrosion process is known as dezincification, and it causes two main problems. First, the zinc builds up inside the walls of the fitting which decreases water flow and eventually causes a blockage. Second, the porous copper-rich structure that is left behind has little mechanical strength and is prone to seepage and structural failure.
Look for whitish powdery surfaces on brass fittings.

Robert I would rather give them the whole write up and go from there.

Here is the one for Canada provided by Bryce Jeffrey

Zern are another firm under a class action suit.
Neither here nor there but yes relevant Kevin
I thought that rudimentary basics to observing defects and deficiencies in PEX and other connecting plumbing may be of some interest to HI’s.
All the best.
Hope all went well at OntarioACHI’S Barrier meetings.
I forget my designation I was running under…
King of S h i t desturbers was one. I thought I had that all wrapped up.
Oh well.