The Valve,safety Relief, cataloged under National Stock Number 4820-01-388-8705, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-388-8705 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| FSC Application Data | NOSE LANDING GEAR, ACFT |
| Operating Pressure | 4075.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 275.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Valve Operation Method | HYDRAULIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| HP1525100-2 | D/9 Drawing number reference only U.S. Government activity |
| HP1525100-2 | 5/9 Secondary reference U.S. Government activity |
| 17B1C7204-501 | 5/2 Secondary reference U.S. Government activity |
| HP1525100-3 | 3/2 Design control — primary reference U.S. Government activity |
| 17B1C7204-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-388-8705 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-388-8705: FSC Application Data: NOSE LANDING GEAR, ACFT; Operating Pressure: 4075.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 275.0 FAHRENHEIT SINGLE RESPONSE DEGF; Special Features: CONSISTS OF THE FOLLOWING MAJOR COMPONENTS: 1 HSG ASSY, VALVE, P/N HP1525101-1; 1 CONTROLLER ASSY, VALVE, P/NHP1525103-2; CRACKING PRESSURE: 4350 PLUS OR MINUS 200 PSIG; OVERALL LGTH 5.400 IN. MIN TO 5.460 IN. MAX IN. 4 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.
NSN 4820-01-388-8705 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.