Model NB-12

With our highest capacity rating, the NB-12 is a heavy-duty tank neutralizer for the largest of light commercial installations (often to handle multiple appliances) requiring a compact footprint.

NB-12 Download Center

NB-Series I & O Manual

NB-12 Product Drawing

The NB-Series is our line of heavy-duty tanks neutralizers for commercial installations. NB-Series models are easily serviceable, providing fast and easy inspection and maintenance. They are well-suited for most standard operating site conditions.

  • Highest capacity rating for commercial installations.
  • Smartly designed for a compact footprint.
  • Ready to handle up to 95 GPH condensate.

The Model NB-12 is well-suited for most commercial installations of high-efficiency, gas-fired appliances such as condensing boilers, furnaces, and hot water heaters rated approximately 7,000 – 12,000 MBH.



The effects of untreated acidic condensate can develop quickly, corroding copper, iron pipes, or floor drains in a matter of months, not years. Fortunately, condensate neutralizers are relatively inexpensive, and they can save property owners from expensive damage.

JJM® condensate neutralizers are quick and easy to install, at the initial installation or during annual maintenance of the high-efficiency, gas-fired appliance. Neutralizers should be installed by a licensed, trained Installer or Service Technician.

Model NB-12 Specifications

Part #2007


Flow Rate

Inlet/Outlet Port


pH Power Pellets® Refill

7,000 - 12,000

95 GPH

1” Socket


NB-12R part #2103

JJM® condensate neutralizers must be routinely serviced to remain effective. Once a year, Service Technicians should inspect the neutralizer and replace the JJM® pH Power Pellets® (neutralizing media) to ensure continued protection and code compliance.

When you register a JJM® condensate neutralizer, the neutralizer will be under warranty against defects in materials and workmanship for one year. The warranty does not cover the issues that result from misuse, improper installation, and/or failure to replace the pH Power Pellets® as instructed.