GlobalTowne is an Authorized Distributor of Z-Flex Z-Vent Stainless Steel Venting.
The Bosch AquaStar 2700ES / Bosch AquaStar 2400ES / Bosch AquaStar 2400E / Bosch 250SX requires 3" or 4" stainless steel venting for Category III Gas Appliances. Our Z-Flex Z-Vent venting meets these requirements and is rated AL29-4C.
Z-Flex Z-Vent is approved for Category I (vertical only), II, III & IV applications and is designed for use with boilers, high efficiency gas and oil heaters and water heaters where cool flue gases are vented under pressure. Z-Vent contains a built-in, fail-safe gasket and locking band connection. No sealant is required.
Z-Flex Z-Vent comes in 3" diameter vent pipe all the way up to 24" diameter vent pipe.
We stock the following:
Z-Vent is manufactured using AL29-4C advanced ferritic stainless steel** with unmatched corrosion resistance for use with condensing furnaces and boilers. Z-Vent was developed in the early 1980s and has thousands of field installations to date. Z-Vent is now manufactured utilizing a fail-safe gasket connection. No sealant required.
The lengths of pipe may be cut on non-expanded end using aviation snips or a hacksaw (24tpi). The cut end must be filed or sanded smooth before joining.
Call us at 888.726.9752 to help you select the stainless steel venting parts or just to verify your venting run.