The Algae Guard, cataloged under National Stock Number 4130-01-520-5305, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Controlled Release Technologies, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Algae Guard |
| FSC / FSG | 4130 — Refrigeration and Air Conditioning Components (FSG 41) |
| Manufacturers | Controlled Release Technologies, Inc. (CAGE 3RUG9) |
| Parameter | Value |
|---|---|
| NSN | 4130-01-520-5305 |
| Primary Part Number | AG-S |
| Item Name | Algae Guard |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Controlled Release Technologies, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| AG-S PRIMARY | Controlled Release Technologies, Inc. (USA) |
NSN 4130-01-520-5305 is a Algae Guard, manufactured by Controlled Release Technologies, Inc., classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-01-520-5305 has 1 manufacturer part number on file: AG-S (Controlled Release Technologies, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 9140-01-527-4289. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.