When designing or upgrading a commercial or industrial water filtration or water softening system, selecting the right stager controller is critical. The controller determines how efficiently your diaphragm valve nest operates, how adaptable your system is, and how precisely you can meet application demands.
Two of the most recognized control platforms in the industry are the AquaMatic 962 Stager Control and the NXT AquaMatic Stager Controller. While both are built to operate durable AQ Matic stagers, they differ in flexibility, system communication capabilities, and cycle configuration.
In this guide, we’ll break down the key features, benefits, and differences between the 962 and NXT controllers to help you determine the best fit for your application.
A stager controller manages the operation of multiported rotary stager valves within a diaphragm valve nest. These systems are commonly used in:
The controller dictates regeneration cycles, monitors flow, and ensures synchronized valve positioning for reliable performance.
The AquaMatic 962 was developed during AquaMatic’s ownership under GE Osmonics. It was built on the proven 962 control backbone from Autotrol and has remained a highly versatile and stable platform in commercial and industrial applications.
One of the defining advantages of the 962 is its ability to control up to 15 unique programmable cycle steps, making it compatible with all AQ Matic stagers.
Optional Accessories
The 962 is ideal for:
Because it can operate all AQ Matic stagers, it remains one of the most adaptable control platforms available.
The NXT Stager Controller was developed when AquaMatic was owned by Pentair and built on the NXT control backbone from Fleck.
Available in both the 48ES and 51ES series configurations, the NXT offers enhanced system communication capabilities and an intuitive user interface.
Unlike the 962, the NXT includes built-in communication that allows multiple controllers to operate as a coordinated system. Supported system types include:
Important Limitation
The NXT platform can control up to 5 unique cycle steps, which limits compatibility to select stagers.
The NXT is best suited for:
Both the 962 and NXT controllers operate AQ Matic stagers — multiported rotary valves known for:
These stagers are designed for tough applications where reliability and longevity are essential.
The right choice depends on your system design:
Choose the AquaMatic 962 if:
Choose the NXT AquaMatic® if:
Both the AquaMatic 962 and NXT controllers provide reliable electronic control for diaphragm valve nests in water filtration and softening systems. The decision ultimately comes down to cycle flexibility versus communication capability.
If your application requires broad compatibility and high cycle customization, the 962 remains a powerhouse platform. If your system demands coordinated multi-controller communication and enhanced diagnostics, the NXT offers expanded system intelligence.
