Category iii refers to positive vent pressure which is created by exhaust blowers in unit heaters.
Category 3 stainless steel venting.
Exhaust flue pipe and fittings are category 3 ul1738 rated.
Compatible with sterling modine dayton mr.
Zflex cat 3 stainless flue pipe 4 inch.
Z vent boiler venting goes together easily without the use of messy bonding agents and carries a limited lifetime warranty.
When compared to plastic and other resin based materials used for venting systems novavent displays considerably lower thermal expansion and contraction making it much more resistance to stress corrosion cracking.
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.
Heatfab nbsp is the leading manufacturer of high quality venting systems for special gas vent applications specified by oems for nbsp over 20 years.
These vent systems must be constructed of al29 4c stainless steel contain gaskets for sealing and have a built in mechanical locking band among other requirements.
Category iii piping systems cannot be joined with category i gravity vented piping systems.
Ansi category i ii ii and iv appliances.
Boilers water heaters and furnaces.
Z vent was developed in the early 1980s and has thousands of field installations to date.
Heater heatstar big maxx and most other unit heaters.
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.
In a category iii venting system if there is a.
Our nbsp saf t vent reg nbsp line of products are perfect for your commercial and industrial needs.
Novavent z flex is the perfect venting choice for the gas tankless water heaters and gas boilers that require 3 cat iii stainless steel venting.
Novavent in 4 inch.
Stainless steel venting kits for gas unit heaters.
Our z vent boiler venting pool heater venting and other gas vent appliances vent pipe is ul listed 1738 category 2 category 3 and category 4 al29 4c stainless steel 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.
Z vent is now manufactured utilizing a fail safe gasket connection.
Time tested installations throughout north america and globally.
