The Piston,valve, cataloged under National Stock Number 4820-01-522-9549, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Strahman Valves France. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-522-9549 |
| Primary Part Number | 717 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Strahman Valves France |
| Status | ACTIVE |
| Valve Model Number for Which Designed | SV700 |
| Material Document and Classification | ASTM B168 UNSN04400 ASSN STD SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 1.000 INCHES IN |
| Valve Design Control Activity | 97141 |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 717 | Strahman Valves France (FRA) |
| Reference | Meaning |
|---|---|
| 16105A | D/9 Drawing number reference only U.S. Government activity |
| 717 | 3/9 Design control — primary reference U.S. Government activity |
| 16105A ITEM NO 12 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-522-9549 is a Piston,valve, manufactured by Strahman Valves France, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-522-9549 has 1 manufacturer part number on file: 717 (Strahman Valves France).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-522-9550, 4820-01-522-9551. Verify interchangeability with system specifications before substitution.
Key specifications for 717: Valve Model Number for Which Designed: SV700; Material Document and Classification: ASTM B168 UNSN04400 ASSN STD SINGLE MATERIAL RESPONSE; Valve Size for Which Designed: 1.000 INCHES IN; Valve Design Control Activity: 97141. 5 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.