Ipex System 636 PVC, CPVC Flue Gas Venting, and Fittings

System 636® PVC & CPVC is the certified system for flue gas venting.

SYSTEM 636 PVC
System 636 PVC is classified as Type BH Class IIA vent, suitable for use on appliances with flue gas temperatures up to and including 65ºC (149ºF).

SYSTEM 636 CPVC
System 636 CPVC is classified as Type BH Class IIB vent, suitable for use on appliances with flue gas temperatures up to and including 90ºC (194ºF).