3" TO 4" BLACK INCREASER FOR PELLET STOVE VOP0152

An increaser is typically needed in several situations: when your pellet stove has a 3-inch outlet but requires 4-inch venting for improved draft, when installing at elevations above 4,000 feet where larger diameter pipe helps maintain proper draft, when your venting system requires increased capacity for longer horizontal runs, or when local building codes require a larger pipe diameter. The VOP5152 allows you to seamlessly transition from your 3-inch stove outlet to a 4-inch pellet pipe system.

The VOP5152 features a 3.09-inch inlet end that connects to your 3-inch pellet pipe or stove adapter, and a 4.75-inch outlet end that connects to standard 4-inch pellet pipe. The revolutionary gasket system creates secure, leak-proof connections at both ends without requiring silicone sealant. The precision-formed ends ensure proper alignment and fit with compatible pellet vent components.

While the VOP5152 can transition between pipe sizes, it's typically used in the venting system rather than directly on the stove outlet. For best results, connect a 3-inch pellet stove adapter (like the VOP0150) to your stove first, then use the VOP5152 increaser to transition to 4-inch pipe. This ensures proper fit and compliance with manufacturer installation requirements. Always consult your pellet stove's installation manual for specific venting requirements.

The VOP5152 increaser complies with all major North American safety and performance standards, including NFPA 211 (Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances), CSA B365 (Installation Code for Solid-Fuel-Burning Appliances and Equipment), UL 641 (Type L Low-Temperature Venting Systems), CAN/ULC S609 (Standard for Factory-Built Chimneys), and ULC/ORD C441. These certifications ensure safe and code-compliant installations.

Increasing from 3-inch to 4-inch pipe serves several important purposes: it improves draft performance for longer venting runs, provides better performance at high altitudes where air is thinner, reduces back pressure in the venting system, allows for more efficient exhaust flow which can improve stove performance, and meets requirements when horizontal runs exceed manufacturer specifications. The larger diameter helps maintain proper draft and prevents issues like smoke spillage or poor combustion.

The VOP5152 features a revolutionary gasket system designed to create leak-proof connections without requiring silicone sealant. However, some manufacturers recommend using high-temperature RTV silicone sealant at connection points for added security. When used in conjunction with a stove adapter, you may need to seal the adapter-to-stove connection per your stove manufacturer's instructions. Always follow your specific pellet stove and venting system installation guidelines.

The stainless steel inner wall provides superior corrosion resistance against acidic condensate produced during pellet combustion. Pellet stoves, especially those burning corn or other biofuels, generate corrosive flue gases that can damage lesser materials over time. The stainless steel construction ensures long-term durability and maintains the integrity of your venting system even under harsh operating conditions. The galvalume steel outer wall offers excellent strength and weather resistance with a professional black finish.

Yes, the VOP5152 is designed for use with pellet stoves that burn wood pellets, corn, and other biofuels. The stainless steel inner wall is specifically chosen for its ability to resist the corrosive nature of flue gases produced by various biomass fuels. Whether you're burning standard wood pellets, corn, or other approved biofuels, this increaser will provide safe and reliable size transition for your venting system when paired with appropriate pellet vent pipe components.