Application guide / Version 1.0
Freeze protection is not the whole operating envelope
Separate the protection objective from the evidence needed to operate and pump the selected fluid.
Name the requirement before selecting a concentration
Dow distinguishes freeze and burst protection in its DOWFROST product information. Those are different protection objectives, not interchangeable labels. The published values belong to that named formulation.
In a project brief, record which objective the equipment owner requires. Keep the lowest operating temperature separate from a shutdown or storage exposure. An entry that merely says “winter protection” leaves the acceptance decision unresolved.
Request a property envelope, not a single headline number
Our proposed purchasing check is to ask for the exact formulation, concentration basis, reference temperature and property-data revision together. Ask the designer to identify which temperature-dependent properties are required for their hydraulic and thermal evaluation.
Do not convert a manufacturer’s freeze-protection statement into a claim that the existing pump or heat exchanger will perform acceptably. That conclusion needs the actual system calculation and the applicable equipment requirements.
- Which conditions govern startup and continued circulation?
- Which data are measured, typical, or guaranteed specification limits?
- Who approves a formulation change and the corresponding design review?
Requirement → evidence → decision boundary
An editorial checklist for your review—not a table of product specifications.
| Requirement | Evidence to request | What it does not establish |
|---|---|---|
| Protection objective | Equipment requirement plus the named fluid’s protection table | A protection temperature is not a pump-performance approval. |
| Fluid identity | Formulation, concentration basis and current technical data | A shared glycol name does not establish interchangeability. |
| Operating performance | Property curves and an equipment-specific engineering evaluation | Typical data are not automatically purchase acceptance limits. |
Make the open questions useful
Record requirements, evidence gaps and approval owners in a downloadable purchasing brief.
Open the requirements worksheet →Revision record
1.0 · September 10, 2026 — Initial source-based edition. No original testing or product qualification is claimed.
For engineering and purchasing teams defining closed-loop fluid requirements. This collection does not size a ground loop, prescribe a concentration, or approve a substitution.
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