Brochure
CHIMNEY & VENTING SOLUTIONS
Contractors Choice Self Sealing 
Gasket System
Z-VENT
®
 AL29-4C
®
 special gas vent for use with 
boilers, water heaters high efficiency furnaces, 
pool and unit heaters. With its patented, double 
fail-safe self-sealing gasket system, it’s proven 
to be both the easiest to install and the most 
reliable venting system in the industry.
• Patented double fail safe self-sealing gasket 
system ensures system is air and water tight.
• cULus tested and listed to cULus 1738 for 
Category II,III,IV appliances 
Z-VENT
®
 Concentric 
Vent System
™
Z-VENT
®
 Concentric Vent System is 
engineered for maximum 
performance, safety and ease of 
installation on high efficiency 
Tankless Water Heaters, Hydronic 
Boilers and Space Heaters.
• Patented Double Fail Safe 
sealing system ensures safe 
exhaust of flue gases.
• Patented design allows for ease 
of installation and professional 
results.
• Single penetration for exhaust 
and air intake with reduced 
clearance.
• Designs for Horizontal and     
Vertical applications.
• Multiple size combinations     
available.
(visit www.z-flex.com for more details)
Z-VENT
®
 Special Gas Vent
CATEGORY II, III, IV HEATING EQUIPMENT
Z-VENT
®
1/2
Appliance connectors available for most 
equipment. Please refer to price guide. 
See website for list of equipment – 
www.z-flex.com
10 ft. Pipe lengths available 
(3 inch and 4 inch diameter)
• Pipe can be cut to length in the field
• 1” clearance to combustibles
The latest develpoments in high efficiency 
heating equipment calls for state-of-the-
art venting designs. Z-VENT
®
 is specifically 
designed for today’s ANSI category II, III, IV 
 condensing and non-condensing, positive and 
negative pressure appliances. cULus tested and 
 listed to standards UL1738/ULCS636, Z-VENT
®
is manufactured in a full range of residential 
and commercial sizes from 3” – 24”, single and 
double wall.
A full range of engineering services is available 
to design systems. Z-VENT
®
 is manufactured 
using AL29-4C
®
* advanced ferritic stainless 
steel with unmatched corrosion resistance 
 for use with condensing furnaces and 
boilers. Z-VENT
®
 is manufactured 
utilizing a fail-safe self sealing gasket 
connection. No sealant is required. 
Visit our website for more 
information 
www.z-flex.com info center. 
Z-VENT
®
 is designed for use 
with boilers, high efficiency furnaces, 
pool heaters, unit heaters and 
water heaters.
Highly Customizable
Powerful New 
Quoting Tool
Z-Vent
®
 System Quotes in Minutes
• Accurate speedy layouts and BOM’s
•CALL NOW







