The Valve,safety Relief, cataloged under National Stock Number 4820-01-424-9139, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is S.a.c.m.a. Societa' Azionaria Costruzioni Macchine Automatiche. Government technical data includes 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-424-9139 |
| Primary Part Number | RV5-16-C-0-30 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | S.a.c.m.a. Societa' Azionaria Costruzioni Macchine Automatiche |
| Status | ACTIVE |
| Connection Style | PLAIN (SCREW-IN CARTRIDGE) ALL ENDS |
| Connection Type | THREADED CARTRIDGE ALL ENDS |
| Style Designator | SCREW-IN CARTRIDGE |
| Adjustable Pressure Range | +50.0 TO 3000.0 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.312 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| RV5-16-C-0-30 | S.a.c.m.a. Societa' Azionaria Costruzioni Macchine Automatiche (ITA) |
| Reference | Meaning |
|---|---|
| RV5-16-C-0-30 | 3/9 Design control — primary reference Telco Inc |
| RV5-16-C-0-30 | 5/2 Secondary reference U.S. Government activity |
| RV5-16-C-0-30 | 5/9 Secondary reference Modular Controls Corp |
| RV5-16-C-0-30 | 5/9 Secondary reference Eaton Aerospace, Llc Dba Jackson South |
NSN 4820-01-424-9139 is a Valve,safety Relief, manufactured by S.a.c.m.a. Societa' Azionaria Costruzioni Macchine Automatiche, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-424-9139 has 1 manufacturer part number on file: RV5-16-C-0-30 (S.a.c.m.a. Societa' Azionaria Costruzioni Macchine Automatiche).
Key specifications for RV5-16-C-0-30: Connection Style: PLAIN (SCREW-IN CARTRIDGE) ALL ENDS; Connection Type: THREADED CARTRIDGE ALL ENDS; Style Designator: SCREW-IN CARTRIDGE; Adjustable Pressure Range: +50.0 TO 3000.0 POUNDS PER SQUARE INCH LBS. 11 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.