DuraVent PolyPro Flex Chimney Cap: finishes the liner at the top of the chimney
The DuraVent PolyPro Flex Chimney Cap is the cap that ends a flexible vent liner at the chimney top. It provides the outlet where the exhaust leaves the chimney. The cap is black and resists damage from sunlight, with a rigid steel flue section that carries the exhaust. Choose a 2, 3, 4, or 5 inch size to match your flex liner. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters.
The liner does not attach directly to the appliance. Rigid PolyPro pipe carries exhaust to the chimney base, where a male flex adapter joins it to the liner. At the top, a female flex adapter joins the liner back to rigid pipe. The appliance manufacturer must approve using PolyPro Flex with your appliance, and the system uses only DuraVent exhaust outlets, called terminations. An existing chimney must also be inspected and found sound before it houses the liner. Need the lining kit too? The DuraVent PolyPro Flex Chimney Lining Kit includes this cap. The DuraVent PolyPro Flex Chimney Cap ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 2PPS-FCTC | 3PPS-FCTC | 4PPS-FCTC | 5PPS-FCTC
Applications
PolyPro is a polypropylene vent pipe for use with ANSI Category II and IV gas-burning appliances, including highefficiency water heaters, condensing boilers and warm air furnaces. Poly Pro is listed by Intertek to the ULC S636 standard in Canada as a Class IIA, IIB and IIC vent system suitable for exhaust temperatures up to 230°F / 110°C, and a maximum positive pressure of 15 in-w.c.
Materials and Construction
Rigid pipe constructed of 2.2mm (minimum) thick polypropylene. Flex is double-wall polypropylene. EPDM or Viton gaskets.
Clearances
General: 0″ clearance to combustibles for exhaust temperatures up to 194°F / 90°C.
Vertical Installations: 0″ clearance for vertical installations up to exhaust temperatures of 230°F / 110°C.
Horizontal Installations: ¼” / 6mm clearance to combustibles for horizontal installations at exhaust temperatures up to 230°F / 110°C.
Concentric vent system components, including Horizontal and Vertical Terminations: 0″ clearance to combustibles for exhaust temperatures up to 230°F / 110°C.
Diameters
5” (130mm) | 6” (150mm) | 8” (200mm)
Listings
Listed with the appliance in the USA, check with appliance manufacturer. Intertek / ETL listed to ULC-S636 Listed as a Class IIA, IIB, and IIC vent system.
Previously the CSA certification trademark was shown in error in conjunction with the PolyPro product – references have been removed.
Videos
Newly Designed PolyPro® Locking Clamps Video
PolyPro® Double-Wall Video
Why Polypropylene? DuraVent’s PolyPro® Venting System Video