The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-329-2054, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Berkshire Industries, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Berkshire Industries, Inc. (CAGE 07039) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-329-2054 |
| Primary Part Number | NM100177 REV B ITEM 7 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Berkshire Industries, Inc. |
| 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 |
|---|---|
| NM100177 REV B ITEM 7 | Berkshire Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 23036215 | 7/2 Vendor item drawing reference Rolls-Royce Corporation |
| PL-G680380AB REV A ITEM 2 | 5/9 Secondary reference Drs Naval Power Systems, Inc. Dba Drs Power & Control Technologies Inc Div Drs Naval Power Systems |
| 6181-177-16 | 3/9 Design control — primary reference Air Dry Co of America, Llc |
| 6181-177-16 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-329-2054 is a Valve,regulating,fluid Pressure, manufactured by Berkshire Industries, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-329-2054 has 1 manufacturer part number on file: NM100177 REV B ITEM 7 (Berkshire Industries, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-615-6738. Verify interchangeability with system specifications before substitution.
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.