Retrofit systems
Subfield Retrofit
A modular wastewater-treatment retrofit being developed for suitable existing septic tanks. Original Subfield assemblies, clear connections and service access—without another wastewater vessel in the base design.
Subfield / Development catalog
One retrofit. Every part considered.
47 familiesStart with the retrofit platform, then explore its treatment, control, connection and service components. The existing tank must qualify; manufactured tank shells are not part of the current offering.
Development catalog—not a released parts list or storefront. Component studies may predate the retrofit. Compatibility, ratings, availability, prices and ordering require qualification and release.
Controllers
Subfield Core
Exterior supervision, local service and upstream power isolation for the retrofit.
Controllers
Field Node
A conditional interface for qualified existing field equipment and observations.
Controllers
Equipment adapter
An identified Subfield interface for approved purchased-pump integration.
Controllers
Alarm assembly
Accessible alarm indication with independently engineered detection and protection.
Controllers
Exterior power module
Protected supply and isolation assembly; exact electrical ratings require qualification.
Sensors
Continuous level sensor
Named-compartment liquid-level observation with host-specific geometry and calibration.
Sensors
High-level detector
Separate high-level detection for the qualified independent alarm arrangement.
Sensors
Low-level detector
Protective level detection where the selected purchased-pump duty requires it.
Sensors
Ponding detector
Conditional restriction observation only where a qualified treatment arrangement requires it.
Before a component becomes a replacement
The part is only half the answer.
Correct selection includes the surveyed host tank, installed role, hardware revision, electrical or hydraulic interface and required commissioning. Catalog entries are not a verified bundle.
Ask about compatibility