Product Overview
Z-Vent
®
Commercial Systems
®
Z-Vent Commercial
®
Double Fail Safe
™
 Connections 
Highest Pressure Rating
Z-VENT
™
 Commercial components are supplied with 
factory installed, patented, fail safe sealing rating of 8” 
W.C.
UL Tested and Listed
Suggested Specification:
Venting shall be Z-Vent
®
 model SVE IV as manufactured 
by Z-Flex
®
. The vent system shall consist of factory 
welded pipe and fittings incorporating a factory fitted 
sealing gasket which, when installed in accordance with 
the manufacturers installation instructions, will seal the pipe 
joints without the use of field applied sealant. 
The vent system shall be leakage tested to 8” W.C. 
positive pressure. The vent system is listed by Underwriters 
Laboratories to UL1738/ULC S636 with a maximum 
allowable continuous flue gas temperature of 550°F
Z-VENT
™
 Commercial Model SVE IV Special Gas 
Vent System, sizes 3” to 24”, are listed by Underwriters 
Laboratories to UL1738/S636 Venting Systems for Gas-
Burning Appliances, Category II,III and IV. Conforming to 
the Underwriters Laboratories pressure specifications with 
the water tight connections, ensure reliability and optimum 
vent performance. Leakage tested to 2½ times the UL 
pressure rating of 8” W.C.
Z-VENT
™
 Commercial components are supplied with 
self sealing gasket connections that install in half the time of 
field sealed systems. 
The special design of the gaskets, along with precision 
engineered close tolerance construction components, 
ensure an air and water tight fit. This air and water 
tight connection ensures optimum vent performance and 
reliability.
A revolutionary self sealing Special Gas 
Vent System that dramatically reduces the 
total installed vent system cost. 
•Gasketed connections
•Fusion welded pipe seams
•No sealant required, no cure time or no call
 backs
•Air-tight seam, smooth finish, better fit
•Metallic Special gas vent cut to length on site
  (single wall version) saves time and lowers cost
•Highest pressure rating in the industry; greater
  than five times the industry standard
•Singlewall and Doublewall manufactured in 
  sizes from 3” to 24”


