What Is Type B Double Wall Vent Pipe

Duravent aluminum high wind cap with 5 inner diameter. One of the fire safety features of double wall type b gas vent is that its outer wall insulated by the airspace beneath it requires only 1 clearance to combustible material in the structure. Duravent 5 inner diameter type b round gas vent pipe double wall 12 adjustable pipe length.

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Type b gas pipe also called b vent or natural vent is prefabricated double wall metal pipe used to vent gas appliances listed for use with type b gas vent.

What is type b double wall vent pipe.

Light weight and rugged the american metal products 5 in. Duravent 4 inner diameter type b round gas vent pipe double wall 12 adjustable pipe length. Round type b gas vent pipe features an aluminum and steel double wall construction that is corrosion resistant. The air space between the inner and outer walls of the vent.

Type b gas vent is designed for negative pressure applications and flue gas temperatures not exceeding 400 f above ambient for category i appliances. Round type b gas vent pipe is ideal for residential light commercial and industrial applications. Type b double wall vent pipe allows you to install it within 1 inch of combustible materials such as wood framing and wall materials. Type b gas vent components.

Each of these ameri vent gas pipes features rugged double wall construction with aluminum alloy 1100 3003 or 3105 inner pipe and corrosion resistant galvanized steel outer pipe. Ameri vent gas vent pipes. Durability is the result of high quality materials and workmanship with galvanized outer pipe and aluminum inner pipe providing protection against corrosion and external damage. Duravent aluminum tee cap with 3 inner diameter.

Type b pipe is becoming less prevalent for venting hearth products but many furnaces and water heaters still use it. Designated for use on approved gas appliances the 3 in. Type b gas vent models m and mo double wall type b gas vent for approved category i natural gas or propane fired appliances gas furnaces heaters fireplaces and boilers in accordance with nfpa 211 standards for chimneys fireplaces vents and solid fuel burning appliances and nfpa 54 the national fuel gas code. What is type b gas pipe.

Made of strong durable galvanized steel this vent pipe is built to last. The exclusive locktab feature adds versatility to installation. Amerivent is a complete gas venting system from 3 to 30 pipe diameters in 7 different pipe lengths to single to multi appliance hook ups. Die formed ends to assure uniform sizing.

4 inch round gas vent collection. With ends and fittings constructed with snap lock coupling it is a safe and secure fit for 5 in. 5 inch round gas vent collection.