DuraVent PolyPro Vertical Flex Termination Cap: ends a flex liner routed through an old B vent
The DuraVent PolyPro Vertical Flex Termination Cap is the cap that finishes a flexible liner above the roof. It works with B vent retrofit adapters when an old B vent serves as the liner’s sleeve. The cap is black and resists sunlight damage. It comes with male and female flex adapters, which connect to the liner, plus gaskets. Choose a 2 or 3 inch cap to match your flex liner’s diameter. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters.
PolyPro Flex is a flexible polypropylene liner with two walls. It carries exhaust through an existing masonry chimney or chase, an enclosed passage that serves only as a sleeve. That chimney cannot also vent another appliance. Exhaust flex must stay inside the chimney or chase and run no more than 45 degrees from vertical, never horizontally. Only flex carrying combustion air, the air used by the appliance to burn gas, may run outside an enclosure or horizontally. Need the connections for the old vent? See the DuraVent PolyPro B Vent Retrofit Adapters. The DuraVent PolyPro Vertical Flex Termination Cap ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 2PPS-VFTC | 3PPS-VFTC
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