316 Stainless Steel EZ Coupler for All-Fuel Flexible Liners

Whether you've come up a few feet short on your chimney relining project, or you need to cut and splice a damaged section of pipe mid-installation, the 316 Stainless Steel EZ Coupler is your perfect solution. Engineered for maximum corrosion resistance, this heavy-duty connector allows you to securely join two pieces of flexible chimney liner end-to-end. Because it is fabricated from premium 316-grade stainless steel, this coupler is rated for "All Fuels," meaning it can safely handle the highly acidic condensation produced by gas and oil furnaces, as well as extreme heat from wood and pellet stoves.

Key Features & Benefits:

• Maximum Acid Resistance (316 Alloy): Unlike standard 304 steel, 316 stainless contains molybdenum, making it strictly necessary for venting corrosive exhausts from gas, oil, and coal appliances.

• Heavy-Duty Adjustable Worm Clamps: Forget the hassle of drilling and driving sheet metal screws while balancing on a roof. This EZ Coupler features dual built-in, adjustable worm gear clamps that tighten down securely onto the corrugated exterior of your flexible liners, creating a strong mechanical lock in seconds.

• Seamless Male-to-Female Fit: Engineered with a precision male and female end, ensuring your two flexible liner sections slide together smoothly without choking the internal diameter or restricting your appliance's draft.

Installation:

Pro Tip: "When using an EZ Coupler to splice two liners, orientation is critical. Always install the coupler so that the crimped (male) end is pointing downward toward your heating appliance. This ensures that any condensation, rain, or liquid creosote flows safely down the inside of the liner walls, rather than leaking out of the spliced joint."

Technical Specifications:

• Material: 316L Stainless Steel (Maximum Corrosion Resistance)

• Fuel Compatibility: All Fuels (Gas, Oil, Coal, Wood, Pellet)

• Application: Connects Flex Liner to Flex Liner

• Fastening Mechanism: Dual adjustable worm gear clamps

• Available Diameters: 3", 4", 5", 5.5", 6", 7", 8", 9", 10", 11", 12"

Frequently Asked Questions:

Is it safe and code-compliant to splice two chimney liners together? Yes. As long as you use a mechanically fastened, stainless steel connector like this EZ Coupler—and follow the correct downward directional flow—splicing two structurally sound liners together is perfectly safe and maintains the integrity of your flue.

Should I buy the 316 Coupler or the 304 Coupler? If your appliance burns gas, oil, or coal, you must use this 316 stainless steel coupler to withstand the highly acidic exhaust. If you are strictly burning solid fuels like wood or pellets, our 304 Stainless Steel EZ Coupler is a safe and more cost-effective alternative.