The Valve,safety Relief, cataloged under National Stock Number 4820-01-191-4059, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-191-4059 |
| Primary Part Number | V-7696-25PSI |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING BODY |
| Opening Pressure Setting | 25.0 POUNDS PER SQUARE INCH25.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| 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 |
|---|---|
| V-6683 PIECE 27 | Portland Valve Llc (USA) |
| V-7696-25PSI PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| V-6683 | D/9 Drawing number reference only Portland Valve Llc |
| V7696 | C/1 Advisory reference — outside the item-of-supply concept Rockwood Systems Corp |
| V-7696 SET 25PS | C/1 Advisory reference — outside the item-of-supply concept Portland Valve Llc |
NSN 4820-01-191-4059 is a Valve,safety Relief, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-191-4059 has 2 manufacturer part numbers on file: V-6683 PIECE 27 (Portland Valve Llc), V-7696-25PSI (Portland Valve Llc).
5 possible matches (shared part number, not a government interchangeability claim): 9515-01-191-6563, 3010-01-191-6564, 3010-01-191-6565. Verify interchangeability with system specifications before substitution.
Key specifications for V-7696-25PSI: Material: STEEL CORROSION RESISTING BODY; Opening Pressure Setting: 25.0 POUNDS PER SQUARE INCH25.0 POUNDS PER SQUARE INCH LBS; Valve Operation Method: AUTOMATICAUTOMATIC. 3 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.