Category iii is defined as a gas heating appliance with a flue loss equal or greater than 17 non condensing with a positive vent static pressure.
Category 3 gas vent pipe.
Z vent is now manufactured utilizing a fail safe gasket connection.
Category iii piping systems cannot be joined with category i gravity vented piping systems.
Made of al 294c stainless steel.
Category iv combustion efficiency over 87.
Time tested installations throughout north america and globally.
Heatfab nbsp is the leading manufacturer of high quality venting systems for special gas vent applications specified by oems for nbsp over 20 years.
Boilers water heaters and furnaces.
Category ii combustion efficiency over 83 use only special condensing service vent as specified by manufacturer.
Ansi category i ii ii and iv appliances.
Compatible with all types of z vent and z flex.
Zflex cat 3 stainless flue pipe 4 inch.
Ameri vent chimney liner kits are designed to allow you to easily line masonry chimneys.
Kits in this category include those designed for natural draft appliances using gas oil or wood.
Category iii vent pipe al29 4c for use in boilers tankless water heaters pool heaters and other appliances requiring category iii stainless vent pipe or category 3 vent pipe.
New fusion welded piper seams for a smoother finish and.
Z vent is approved as a replacement for high temperature plastic vent.
Category iii combustion efficiency 83 or less use only pressurizable vent as specified by manufacturer.
Category iii refers to positive vent pressure which is created by exhaust blowers in unit heaters.
In a category iii venting system if there is a.
In short it is a us standard for gas venting systems required in category iii applications.
As well as those suitable for category i gas fired appliances with b vent or appliances with a draft hood.
Category iii piping systems operate with positive vent pressure and are sealed by the high temperature seals and locking devices built into the category iii approved vent pipe.
High quality category iii stainless steel exhaust piping.
Z vent is manufactured using al29 4c advanced ferritic stainless steel with unmatched corrosion resistance for use with condensing furnaces and boilers.
Simple gasket connections no sealant needed.
Z vent was developed in the early 1980s and has thousands of field installations to date.
Oem specified and ul listed special gas vent for category ii iii and iv heating equipment.
