The Parts Kit,gate Valve, cataloged under National Stock Number 4820-01-157-3890, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mcnaughton Dynamics Limited. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-157-3890 |
| Primary Part Number | A040901054 |
| Item Name | Parts Kit,gate Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mcnaughton Dynamics Limited |
| Status | ACTIVE |
| End Item Source | 58328 |
| End Item Name | NITROGEN SERVICING UNIT |
| 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 |
|---|---|
| A040901054 | Mcnaughton Dynamics Limited (GBR) |
| Reference | Meaning |
|---|---|
| 8222407 | 5/9 Secondary reference U.S. Government activity |
| A040901054 | 5/9 Secondary reference Zwick Energy Researach Organization Inc |
| 8222407-10 | 3/9 Design control — primary reference Prime Source |
| 8222407-10 | 5/9 Secondary reference Zwick Energy Researach Organization Inc |
| 8222L107-10 | 5/9 Secondary reference Zwick Energy Researach Organization Inc |
NSN 4820-01-157-3890 is a Parts Kit,gate Valve, manufactured by Mcnaughton Dynamics Limited, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-157-3890 has 1 manufacturer part number on file: A040901054 (Mcnaughton Dynamics Limited).
Key specifications for A040901054: End Item Source: 58328; End Item Name: NITROGEN SERVICING UNIT; Special Features: CONSISTS OF 1 EACH - BONNET GASKET,WEDGE,PACKING ADAPT.,PACKING UNIT,GLAND FOLLOWER,EXT. ND. BONNET; End Item Identification: 3655-01-089-9563. 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.