The Controller, cataloged under National Stock Number 4820-01-551-7597, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Paratech Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-551-7597 |
| Primary Part Number | 22-890900 |
| Item Name | Controller |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Paratech Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 22-890900 PRIMARY | Paratech Inc (USA) |
| Reference | Meaning |
|---|---|
| 10187436 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4820-01-551-7597 is a Controller, manufactured by Paratech Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-551-7597 has 1 manufacturer part number on file: 22-890900 (Paratech Inc).
Key specifications for 22-890900: Special Features: DUAL DEADMAN; End Item Identification: AIR LIFTING BAGS. 0 specifications are documented in the U.S. Government catalog.
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.