The Valve,safety Relief, cataloged under National Stock Number 4820-01-391-0412, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Zodiac Milpro Uk Limited. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-391-0412 |
| Primary Part Number | 314843 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Zodiac Milpro Uk Limited |
| Status | ACTIVE |
| Connection Style | ERR-090 FIRST END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 16 FIRST END |
| Material | PLASTIC BODY |
| Thread Series Designator | UN FIRST END |
| 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 |
|---|---|
| 314843 | Zodiac Milpro Uk Limited (GBR) |
| Reference | Meaning |
|---|---|
| 780RPP-1.75PSI | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-391-0412 is a Valve,safety Relief, manufactured by Zodiac Milpro Uk Limited, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-391-0412 has 1 manufacturer part number on file: 314843 (Zodiac Milpro Uk Limited).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-682-0694. Verify interchangeability with system specifications before substitution.
Key specifications for 314843: Connection Style: ERR-090 FIRST END; Connection Type: THREADED EXTERNAL TUBE FIRST END; Style Designator: STRAIGHT THRU; Thread Direction: RIGHT-HAND FIRST END. 9 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.