Figure 13, Figure 15- (3" flex / b vent), Figure 14 – DuraVent PolyPro Flex User Manual
Page 10
10
Instructions- 3" (80mm) pp Flex in b Vent
1. Remove existing B Vent termination cap
2. Carefully feed flex down through B Vent so 
approx 2' of flex extends beyond the bottom 
of the B Vent (Flex puller or rope aid optional)
3. Cut to length the top of Flex pipe and 
insert flex through B Vent Adapter- Upper
4. Install PP Flex Gasket and Flex Female 
Adapter onto Flex pipe per instructions 
detailed above
5. Lower B Vent Adapter- Upper to the top 
of the B Vent and secure with screws (x3) 
supplied
6. Install C Support Bracket as shown in Fig.14 
and lower Flex Female Adapter into B Vent 
Adapter- Upper
7. Attach Termination Top to Termination Cap 
(clicks when engaged), insert 3" Rigid Pipe 
into Termination Cap, and attach Termination 
Insert into Termination Cap (clicks). Then 
connect Termination Insert to Termination 
Transition (click).
8. Line up inner pipe connections and push 
termination assembly down onto B Vent 
Adapter- Upper and secure with screws (x3) 
provided
9. Cut Flex to length 3" below the bottom of 
the B Vent
10. Install Flex Gasket and Flex Male Adapter 
on Flex
11. Install B Vent Adapter- Lower. (Flex Male 
Adapter should protrude beyond per Fig.13)
12. Secure B Vent Adapter- Lower to B Vent 
with hardware provided
Figure 13
B Vent PiPe
flex Male
aDaPteR
B Vent
aDaPteR-
loweR
MountinG
haRDwaRe
teRMination caP
flex Male aDaPteR
3" (80MM) flex Gasket
B Vent aDaPteR- loweR
teRMination tRansition
B Vent aDaPteR- uPPeR
B Vent PiPe
teRMination inseRt
3" (80MM) RiGiD PiPe
c suPPoRt BRacket
MountinG haRDwaRe
flex feMale aDaPteR
3" (80MM) flex
3" (80MM) flex Gasket
Figure 15- (3" Flex / B Vent)
teRMination toP
Figure 14
B Vent
PiPe
B Vent
aDaPteR-
uPPeR
flex
feMale
aDaPteR
c suPPoRt
BRacket