The Valve,safety Relief, cataloged under National Stock Number 4820-01-371-2574, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Delphi Powertrain Systems, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Viking Incorporated Dba Viking Inc (CAGE 1EN78); Delphi Powertrain Systems, Llc (CAGE 63632) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-371-2574 |
| Primary Part Number | B8772/40-500/SP2 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Delphi Powertrain Systems, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| B8772/40-500/SP2 | Viking Incorporated Dba Viking Inc (USA) |
| B8772/40-500/SP2 PRIMARY | Delphi Powertrain Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| B8772/40-500/SP | C/1 Advisory reference — outside the item-of-supply concept Primary Fluid Power Ltd |
| B8772 | D/9 Drawing number reference only Delphi Powertrain Systems, Llc |
NSN 4820-01-371-2574 is a Valve,safety Relief, manufactured by Delphi Powertrain Systems, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-371-2574 has 2 manufacturer part numbers on file: B8772/40-500/SP2 (Viking Incorporated Dba Viking Inc), B8772/40-500/SP2 (Delphi Powertrain Systems, Llc).
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.