Our Products #4951176

Part Number: 2ZVCKT4
Kit includes: (1) 4" concentric through the wall termination hood with 3" air intake, (1) 4" x 1' pipe, (1) 4" x 90 degree elbow, (1) 4" universal appliance adapter with built in back-flow preventer and condensation drain, (1) condensate drain tube-kit, (1) 3" x 3' length of combustion air duct with clamps.

Part Number: 2ZVW04
Kit includes: (1) 4" termination hood, (1) 4" x 90 degree elbow, (1) 4" x 1' vent pipe, (1) 4" x 1.5' vent pipe, (1) 4" wall thimble, (1) 4" universal adapter

Part Number: 2SVEPWCF
Z-Vent is a factory built, engineered AL29-4C special gas vent pipe, suitable for positive or negative pressure. Z-Vent is UL tested and listed to UL1738S636. CAT II, III, IV venting approved.

Single Wall Eccentric Increaser
Part Number: Single Wall Eccentric Increaser
Single Wall Eccentric Increaser - Used to upsize a vent system. Recommended for use with horizontal vent runs.

Part Number: 2SVSHTC04
4" Z-Vent Concentric Vent Termination designed for use with tankless water heaters and high condensing boilers that bring in fresh air intake using a 4" port. (also available in other sizescombinatons of exhaust and intake diameters)

Part Number: 7HS32XX
Constant tension clamps come with a 516" hex slotted head and 12" wide stainless steel band. Fully adjustable and ideal for making flexible duct connections in diameters ranging from 2" to 24". Offer maximum strength and anti-shear protection. Not recommended for underground applications.


The life of all fabric ducts can be greatly extended when sized correctly according to equipment exhaust requirements. Novaflex offers a complete line of fittings and accessories for use in exhaust systems. Where exhaust fume leakage is of concern, a negative pressure fan system should be incorporated. Please consult a Novaflex factory salesperson for correct sizing for diesel, caustic or high velocity exhaust applications. This will also aid in reducing exhaust temperatures and static pressures.

Part Number: 2SVSRPK
Z-Vent vertical vent kit includes:
1 rain cap
1 top supportstorm collar
1adjustable roof flashing

Part Number: 2SVSLBF
Used to strengthen connection between flue outlet and Z-Vent on some applications where a specific appliance adapter is not specified. High temeperature Z-Vent sealant may also be needed along with locking band to ensure a good seal to flue outlet.

Lochinvar Knight Boiler Adapter
Part Number: 2SVAKA
Z-Vent adapter for Lochinvar Knight boiler.

For further information, Lochinvar manuals are available on their website at this link:

Z-Flex Chimney Liner Kits - All Fuels

Z-Flex Stainless Steel Chimney Liner Kits come complete with everything you need to quickly and easily install a professional venting system. Manufactured from special high temperature and acid resistant stainless steel, exclusive to Z-Flex