Resources / Documents
Product documents.
This library lists released spec sheets, manuals, drawings and certificates for Subfield products, with each file’s type and the products it covers.
No documents are published yet.
The Subfield retrofit enhanced treatment system is in development. Development preview. Host-tank compatibility, treatment capacity, approvals, pricing and service intervals are not yet released. Certifications and state or local approvals will be published only when they are established.
Technical information on this site.
These pages describe the current development direction. They are not released specifications, installation instructions or approvals.
The retrofit system.
- How the retrofit works
The proposed process uses oxygen, attached microorganisms and deliberate solids separation. It is not simply a finer filter.
- Installation planning guide
This is a planning guide, not field installation instructions.
- Retrofit system compatibility
Review tank integrity, usable volumes, baffles, access, ventilation and the approved disposal system together. Nominal tank gallons do not establish treatment capacity.
Status and questions.
- Warranty status
Warranty terms will be published before any order is confirmed, so you can read them before you buy.
- Does it fit every septic tank?
- Who should install the system?
- Are ratings, manuals and warranty terms final?
Ask a technical question.
An inquiry is not an order, a reservation or an installation approval.