utilizing this specific RPZ air gap adapter ensures your installation remains compliant with municipal safety standards and protects the integrity of the potable water supply in commercial or industrial mechanical rooms

The 62-22864-82 is a direct replacement for several legacy part numbers

Engineered for compatibility

It operates on 24V AC low voltage systems and is fully compatible with millivolt heating applications

McDonnell & Miller RB-24E-L Control 30067439-890 utilizing this specific RPZ airThe McDonnell & Miller RB 24E L (Part Number 144690) is a specialized residential low water cut off designed for 24V hot water boiler systems. This electronic LWCO utilizes a 3 4" NPT probe style sensing element to monitor for hazardous low water conditions, ensuring the burner circuit is interrupted before equipment damage occurs. Unlike manual reset models, this unit features an auto reset function that restores operation once the water level