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Home > Chimney Pipe & Liners > Gas Vent Pipe > DuraVent Type B Venting Installation Guide

DuraVent Type B Venting Installation Guide


Simpson Dura-Vent's Type B Gas Vent system is for use with natural gas or liquid propane category I and draft hood equipped appliances, and appliances tested and listed to use Type B Gas Vent for a wide range of applications, including: natural gas fireplaces, gas-fired furnaces, boilers, water heaters, and wall or space heating applications.

Simpson Dura-Vent's Type B Gas Vent systems are UL Listed to UL 441 and UL 1777 (MH6357). ULC Listed to ULC S605 (CMH1276 & CMH1407).

Refer to the Typical Installation drawings below to select the appropriate component parts for your installation.

Type B Gas Vent Installation Key

1. DuraCap 10.  Female Flex Adapter 19. Oval Tee
2. Storm Collar 11. Male Adapter 20. Oval Tee Cap
3. Roof Flashing 12. Double-Wall Wye 21. Oval Tee Support
4. High-Wind Cap 13. Pipe Collar 22. Oval Firestop Spacer
5. Round Pipe 14. Increaser 23. DuraConnect II
6. Elbow 15. Draft Hood Connector 24. DuraFlex AL Length
7. Tee 16. Square Firestop Support 25. DuraFlex Motar Sleeve
8. Tee Cap 17. Oval Pipe 26. DuraFlex AL Coupling
9. Increaser Tee 18. Oval to Round Adapter  

 

How Size and Height Affect Stove Performance

The amount of heat the vent gases lose as they flow determines how much condensation will occur and how strong the draft will be. To control the heat loses, proper selection of venting materials is of vital importance.

Double-wall Type B Gas Vent, with an aluminum inner wall and a galvanized steel outer wall, has proven to be the ideal choice in venting materials.

A Type B Gas Vent Sizing Handbook is available to assist you with the proper installation. Click HERE to view online.

 

Vent Termination Chart

Using listed Type B Gas Vent caps may terminate in accordance with this table.

 

Gas Vent Specification Chart

NOTES

1. Clearance to combustibles is the air space between vent and combustibles.

2. Maximum height varies with equipment over 50’, for taller applications refer to SDV sizing handbook 2. (L202). 14"-16" Require screws.

3. When oval is used on wall furnaces, minimum height required from bottom of furnce to cap is 12’, minimum 16” stud space.

4. Limited by sizing tables.

5. 18” pipe OD is one inch larger than ID and 20” - 30” OD is 2” greater than ID.

 





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Chimney Pipe - Class A

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Home > Chimney Pipe & Liners > Gas Vent Pipe > DuraVent Type B Venting Installation Guide
Home > Chimney Pipe & Liners > Gas Vent Pipe > Type B Vent Pipe for B Vent Applications > DuraVent Type B Venting Installation Guide
Home > Chimney Pipe & Liners > Gas Vent Pipe > Gas Vent Pipe - Type B > DuraVent Type B Venting Installation Guide