2.5 - 3 in. Adapter Eccotemp FVI12, i12 /Rheem/Paloma by Z-Vent Z-Flex


Quantity Price Each
3+ Items $37.00
* Note:

Weight: 2.40 lbs

Rush Order:

Made in AmericaThis stainless steel adapter is compatible with certain Paloma, Rheem, Noritz heaters, plus the Eccotemp FVI12 and i12 series. It converts the flue opening from 2.5" to standard 3" Z-Vent venting. Total item length is 6".

This gadget has a clamp on one end to clamp onto the heater flue opening and a seal on the other female end. It connects the tankless water heater to 3" Z-Vent stainless steel Vent pipe.

Partial compatibility list

Rheem/Ruud RTG42 PVN (pronto! 4.2, RTG42PVN) and RTG42 PVP (pronto! 4.2, RTG42PVP)
Rheem/Ruud RTG53
Paloma PH-16 (PH16)
Paloma PH-20 (PH20)
Paloma PTG42-PVN and PTG42PVN (PTG42-PVP, PTG42PVP)
Eccotemp FVI-12NG and FVI-12LP (FVI12LP, FVI12NG)
Eccotemp i12-NG and i12-LP (i12NG, i12LP)


The Z-Vent system is designed for use with boilers, water heaters, and high efficiency gas and oil heaters that have cool flue gases vented under pressure. Z-Vent pipe contains and locking band connections and built-in, fail-safe gaskets.

• Simple gasket connection: no sealant needed
• The industry's highest available pressure rating
• The only metal special gas vent that can be cut to length on your job site
• New type of fusion-welded pipe seams for a smoother exterior and tighter fit
• Compatible with all Z-Flex Z-Vent products
• Vent material: AL29-4C stainless steel
• Certification: Tested to meet or exceed Underwriters Laboratories (UL) spec UL1738 and ULS636
• Approval: Cat II, III, IV venting
• Limited Lifetime Warranty

To ensure that freezing air does not come back through the vent pipe, you must use a straight pipe piece with backflow prevention.


Z-Vent SVE Series IV Installation and Maintenance Instructions, 3" to 24", Single & Double Wall

Z-Vent Dimensional Specifications

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Jun 25, 2016
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