The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-258-4026, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Granite Fluid Power Machining & Fabrication, Inc.. 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. 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 | 4820-01-258-4026 |
| Primary Part Number | 092378 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Granite Fluid Power Machining & Fabrication, Inc. |
| Status | ACTIVE |
| Body Style | TEE GIVE "ADQL" AND "ADQM" ONLY WHEN FLANGED ALL ENDS |
| Face to Face Distance | 4.375 INCHES NOMINAL IN |
| First Connection Face to Centerline Distance | 2.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-258-4026 is a Valve,relief,pressure and Temper, manufactured by Granite Fluid Power Machining & Fabrication, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-258-4026 has 2 manufacturer part numbers on file: 092378 (Granite Fluid Power Machining & Fabrication, Inc.), 5979219 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5920-01-380-1598. Verify interchangeability with system specifications before substitution.
Key specifications for 092378: Body Style: TEE GIVE "ADQL" AND "ADQM" ONLY WHEN FLANGED ALL ENDS; Face to Face Distance: 4.375 INCHES NOMINAL IN; First Connection Face to Centerline Distance: 2.000 INCHES NOMINAL IN. 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.