The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-372-8139, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Haldex Brake Products Corporation. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-372-8139 |
| Primary Part Number | N-30261-B |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Haldex Brake Products Corporation |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | STEEL BODY |
| Media for Which Designed | HYDRAULIC OIL |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 1/2-14 NPT FIRST END |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| 12378851 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| 12378851 | Amz Alabama Inc. (USA) |
| 12378851 | Oshkosh Defense Llc (USA) |
| N-30261-B PRIMARY | Haldex Brake Products Corporation (USA) |
| Reference | Meaning |
|---|---|
| 12378851 | 5/9 Secondary reference Oshkosh Corp |
| 4820013728139 | 5/9 Secondary reference E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 12378851 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 4820-01-372-8139 is a Valve,regulating,system Pressure, manufactured by Haldex Brake Products Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-372-8139 has 4 manufacturer part numbers on file: 12378851 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 12378851 (Amz Alabama Inc.), 12378851 (Oshkosh Defense Llc), N-30261-B (Haldex Brake Products Corporation).
Key specifications for N-30261-B: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 14 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.