DuraVent PolyPro Concentric Extension with SP: a capped port for checking exhaust without drilling
The DuraVent PolyPro Concentric Extension with SP is a short concentric vent section, with one pipe inside another. It sits directly above the appliance. SP means sample port, an opening with a threaded cap that a technician unscrews to test the exhaust. This lets them check how the appliance burns without making a hole in the pipe. PolyPro is DuraVent’s polypropylene vent pipe for high efficiency condensing gas boilers, furnaces, and water heaters. Choose 2 by 4 inch, 3 by 5 inch, or 4 by 6 inch. The first number is the inner pipe size, and the second is the outer.
A concentric section can be shortened only when a label on its inserting end permits cutting. Without that label, it must stay uncut. The appliance cannot support the vent’s weight. Wall straps support vertical and other runs, including just after every elbow or tee fitting. A firestop, a barrier around the vent opening, belongs at each floor and ceiling crossing, including the attic floor but not the roof deck. Need a condensate trap? See the DuraVent PolyPro Concentric Condensate Trap. The DuraVent PolyPro Concentric Extension with SP ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.
Details
SKU: 2PPC-ESP | 3PPC-ESP | 4PPC-ESP
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