PEX A is produced using the peroxide, or Engel, method. This creates a high degree of molecular cross-linking, which gives the pipe a stronger memory. If you bend PEX A, it tends to spring back. If y...
Before you buy a single fitting for a PEX plumbing system, you have to decide which PEX type you are installing. The difference between PEX A and PEX B fittings is not a cosmetic label. It drives the...
If you have ever seen a PEX fitting leak after a system is under pressure, the cause is rarely the brass fitting itself. More often, the pipe was not prepared correctly, or the connector was not seat...
On a commercial retrofit, the cold-water supply line had a failed ball valve that was buried behind a new wall. There was no room to cut the pipe back and thread a new fitting. In that exact situatio...
Flush a toilet and, a few seconds later, the cistern falls silent again. That brief hiss followed by a clean stop is the entire operating cycle of a ballcock valve, a design that has been doing the s...
Earlier this month, a maintenance supervisor for a 40-unit apartment building asked why a brass plumbing pipe and brass pipe fittings were still being specified for the recirculating hot-water loop, e...
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