Installers and specifiers know a gas appliance is only as good as the venting system it’s connected to. Poor venting can cause improper combustion, but, more importantly, can also lead to flue gas leakage into heated spaces — a problem with deadly consequences.
Uponor North America is launching six new ProPEX Lead-free (LF) Brass CPVC Adapter Fittings for transitioning from CPVC to PEX in commercial plumbing and hydronic distribution piping systems.
A line of PVC and CPVC duct dampers offered in butterfly, gravity, and blast gate types for fume removal applications is available. The backdraft dampers come in three flow control types: butterfly for balancing airflow, a gravity backflow preventer which closes when the air pressure stops, and a blast gate for on-off.
Chlorinated polyvinyl chloride (CPVC) first made its way into the world of venting systems in the residential market. Recently, CPVC has been used to vent Category IV high-efficiency boilers. While it can cost up to 20 percent less than stainless steel, those specifying venting systems should consider other differences that may impact boiler efficiency and present potential safety hazards.
