The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-408-8957, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-408-8957 |
| Primary Part Number | 211034980 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Second End Relationship with First End | NOT IDENTICAL |
| Remote Actuation Method | DIAPHRAGM |
| Body Style | ANGLE |
| First End Style Designator | SOCKET |
| First Connection Face to Centerline Distance | 4.500 INCHES MAXIMUM IN |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 5.0 TO 20.0 CAMERA MOUNT |
| Valve Loading Method | SPRING |
| Second Connection Face to Centerline Distance | 6.250 INCHES MAXIMUM IN |
| Second End Style Designator | SOCKET |
| First End Connection Type | UNTHREADED INTERNAL PIPE |
| Material | PLASTIC POLYCHLOROTRIFLUOROETHYLENE SEAT |
| Second End Connection Type | UNTHREADED INTERNAL PIPE |
| Furnished Items | TAILPIECE AND BONNET |
| 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 |
|---|---|
| 211034980 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| V1E10407-01 | 3/2 Design control — primary reference U.S. Government activity |
| V1E10407 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-408-8957 is a Valve,regulating,fluid Pressure, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-408-8957 has 1 manufacturer part number on file: 211034980 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-462-7907. Verify interchangeability with system specifications before substitution.
Key specifications for 211034980: Flow Control Device: DISK; Second End Relationship with First End: NOT IDENTICAL; Remote Actuation Method: DIAPHRAGM; Body Style: ANGLE. 16 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.