The Valve,safety Relief, cataloged under National Stock Number 4820-01-260-0504, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-260-0504 |
| Primary Part Number | B8394 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division |
| Status | ACTIVE |
| Adjustable Pressure Range | +200.0 TO 400.0 POUNDS PER SQUARE INCH LBS |
| Material | STEEL CORROSION RESISTING BODY |
| 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 |
|---|---|
| B8394 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division (USA) |
| 1876-1359 ITEM 1 | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division (USA) |
| Reference | Meaning |
|---|---|
| 1876-1359 | D/9 Drawing number reference only Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division |
NSN 4820-01-260-0504 is a Valve,safety Relief, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-260-0504 has 2 manufacturer part numbers on file: B8394 (Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division), 1876-1359 ITEM 1 (Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division).
4 possible matches (shared part number, not a government interchangeability claim): 3020-01-260-0662, 4810-01-260-0683, 4810-01-290-1461. Verify interchangeability with system specifications before substitution.
Key specifications for B8394: Adjustable Pressure Range: +200.0 TO 400.0 POUNDS PER SQUARE INCH LBS; Material: STEEL CORROSION RESISTING BODY. 2 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.