Category 3 Gas Vent Pipe

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.

Oem specified and ul listed special gas vent for category ii iii and iv heating equipment. New fusion welded piper seams for a smoother finish and. Heatfab nbsp is the leading manufacturer of high quality venting systems for special gas vent applications specified by oems for nbsp over 20 years. Use standard venting masonry or type b vent.

Z vent is approved as a replacement for high temperature plastic vent. Category iv combustion efficiency over 87. Kits in this category include those designed for natural draft appliances using gas oil or wood. As well as those suitable for category i gas fired appliances with b vent or appliances with a draft hood.

Simple gasket connections no sealant needed. Category iii refers to positive vent pressure which is created by exhaust blowers in unit heaters. High quality category iii stainless steel exhaust piping. Ansi category i ii ii and iv appliances.

Gas vent pipes special gas vent for category ii iii iv heating equipment z vent is designed for use with tankless water heaters standard water heaters both residential and commercial applications and boilers as well as high efficiency furnaces and pool heaters. Zflex cat 3 stainless flue pipe 4 inch. Our nbsp saf t vent reg nbsp line of products are perfect for your commercial and industrial needs. Compatible with all types of z vent and z flex.

In short it is a us standard for gas venting systems required in category iii applications. Boilers water heaters and furnaces. Made of al 294c stainless steel. 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. 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. Z vent was developed in the early 1980s and has thousands of field installations to date. Category ii combustion efficiency over 83 use only special condensing service vent as specified by manufacturer.

Category iii combustion efficiency 83 or less use only pressurizable vent as specified by manufacturer. Z vent is manufactured using al29 4c advanced ferritic stainless steel with unmatched corrosion resistance for use with condensing furnaces and boilers. In a category iii venting system if there is a.