Answering the common search for durable, code-compliant 6-inch B vent pipes, this guide highlights five solid choices. These options suit homeowners installing natural gas or propane appliances with Type B venting requirements, plumbers outfitting existing systems, and renovators updating old venting. The top picks emphasize corrosion resistance, secure connections, and clear suitability notes for different installations. The buyer-friendly table below compares core specs and intended applications to help you choose with confidence.
| Product | Best For | |
|---|---|---|
| Selkirk Corp 186600 Gas Termination Kit, 6-Inch | New installations needing complete termination kits | Top flashing, storm collar, draft hood connector; galvanized steel; Type B; 6″ diameter |
| Simpson Duravent 6GV60 6″x60″ Type B Vent Pipe | Long vent runs with secure twist-lock connections | 25-year warranty; Category I venting; durable twist-lock |
| 6gv24 Pipe Gas Vent Rnd 6 In X 24 In 394068 M & G Dura Vent | General venting for HVAC, hearth, and industrial uses | Circular vent pipe; versatile for multiple applications |
| SELKIRK CORP 106800 6-Inch Round Top | Gravity draft venting for LP or natural gas appliances | Top round, Type B; not for wall furnaces or wood burning |
| DuraVent 6BVL45 6 in. x 45-60 deg B-Vent Adjustable Elbow | Adjustable elbow for precise fits in B-vent systems | 65 deg adjustable elbow; Type B system; 1 in. clearance to combustibles |
Selkirk Corp 186600 Gas Termination Kit, 6-Inch
The Selkirk 186600 kit is designed for new installations requiring a complete termination assembly. Best for installers who need a ready-to-use top flashing, storm collar, and draft hood connector in a single package. This 6-inch Type B vent termination is constructed from galvanized steel for corrosion resistance, making it suitable for long-term outdoor or attic exposures. Choose this if you want an all-in-one solution to streamline installation and minimize parts sourcing. Caution: Ensure your system matches the 6″ diameter and Type B gas vent requirements before purchase.
Simpson Duravent 6GV60 6″x60″ Type B Vent Pipe
The Simpson Duravent 6GV60 provides a long run solution with secure twist-lock connections. It is ideal for Category I natural gas and propane appliances, offering a 25-year warranty on the pipe portion and a reliable, durable connection system. Best for installers prioritizing ease of assembly and long-term service. Better for longer vent runs where secure, airtight joints are essential. Caution: Verify that the system length and fittings comply with local code and appliance manufacturer recommendations.
6gv24 Pipe Gas Vent Rnd 6 In X 24 In 394068 M & G Dura Vent
This 6-inch circular vent pipe from DuraVent is designed to support venting systems for HVAC, hearth, and certain industrial applications. Best for projects needing a compact 24-inch section for short vent runs or couplings with other components. It’s a solid choice when you require straightforward, no-fruss venting segments. Limitation: Not a full termination kit; supplemental components are required for a complete system.
SELKIRK CORP 106800 6-Inch Round Top
The Selkirk 106800 round top is designed for gravity draft venting of LP or natural gas appliances. Best for configurations that require a top termination with gravity draft characteristics. It is not suitable for wall furnaces or wood-burning installations. This option is ideal when the system demands a gravity-draft setup and a dedicated Type B termination top. Caution: Confirm compatibility with your appliance’s draft requirements before installing.
DuraVent 6BVL45 6 in. x 45-60 deg B-Vent Adjustable Elbow
This DuraVent elbow adds versatility to a 6-inch Type B vent system, with a 45-60 degree adjustable bend. Best for layouts requiring directional changes without additional fittings. It supports the standard B-vent system and maintains a 1-inch clearance to combustibles in typical residential installations. Limitation: Check that the elbow angle meets your appliance’s venting path and clearance requirements.
Buying Guide: Key Purchase Considerations
What is Type B gas vent, and why does diameter matter?
Type B gas vent is designed for natural gas and propane appliances, offering a double-wall, noncombustible vent solution. The 6-inch diameter is common for mid-range appliances and ensures adequate venting capacity for many homes. Verify the appliance’s venting instructions to match the correct Type B configuration and diameter.
What features indicate a durable vent system?
Look for galvanized steel construction, corrosion resistance, secure twist-lock connections, and compatibility with gravity draft or venting top components as required by your appliance. Complete termination kits simplify installation and reduce leak points at joints.
How to choose between long runs and short segments?
For long vent runs, select pipes with robust joint systems (twist-lock) and consider length per your installation plan. Shorter runs may benefit from pre-assembled termination kits to minimize field assembly steps and potential errors.
Are there safety and clearance considerations?
Ensure proper clearance to combustibles and adherence to local building codes. Elbows and fittings should preserve adequate venting clearances and maintain the required draft characteristics for the appliance type.
What installation cautions should buyers remember?
Always confirm compatibility with your specific appliance model and venting requirements. Avoid mismatched diameters or incompatible top components, which can hinder vent performance or void warranties.
Frequently Asked Questions
- What is the advantage of a termination kit for a 6-inch B vent?
- Can I use any 6-inch B vent pipe with my gas heater?
- Is a longer vent run better with twist-lock joints?
- Do adjustable elbows affect vent efficiency?
- When should I avoid a particular 6-inch B vent component?
- How do I ensure proper installation?
A termination kit provides a complete, ready-to-install top, flashing, storm collar, and draft hood connector, ensuring a proper seal and airflow path.
No. Always verify that the pipe’s Type B rating and diameter match the appliance’s venting instructions and local code requirements.
Twist-lock joints offer secure connections and reduce exhaust leaks, making them favorable for longer runs when properly installed.
Yes. They provide routing flexibility but must maintain correct clearance and vent flow to avoid restrictions that could impair draft.
Avoid components not specified for your appliance type or venting path, such as using a gravity-draft top with a forced-draft appliance.
Follow the appliance manufacturer’s venting instructions, local codes, and product guidelines for diameters, materials, and clearance requirements.