DuraVent PolyPro Concentric Reducer: steps your vent down to a smaller size
The DuraVent PolyPro Concentric Reducer is a fitting that connects a concentric vent to a smaller section of vent. Its larger connection is 3 by 5 inch, with the first number describing the exhaust pipe and the second the outer pipe. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters. Concentric joints slide together over a gasket. The socket ends containing the gaskets face away from the appliance, toward the vent outlet. Two included self tapping screws secure the outer pipes at the joint. There is no locking band.
On a horizontal run, concentric PolyPro needs to slope back toward the appliance without low spots that could collect condensate, the liquid that forms as exhaust cools. This lets the liquid return to the appliance or a drain. The appliance maker specifies how that drainage is handled. Need to go larger instead? See the DuraVent PolyPro Concentric Adapter Increaser fitting. The DuraVent PolyPro Concentric Reducer ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 3PPC-X2RED
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