The Stem,fluid Valve, cataloged under National Stock Number 4820-01-439-5100, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Warren Controls, Inc.. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-439-5100 |
| Primary Part Number | B3620554-01 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Warren Controls, Inc. |
| Status | ACTIVE |
| Valve Type for Which Designed | REGULATOR |
| Stem Actuating End Type | THREADED INTERNALLY |
| Valve Model Number for Which Designed | 20S |
| Valve Size for Which Designed | 0.750 INCHES IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| B3620554-01 PRIMARY | Warren Controls, Inc. (USA) |
| 00201205941 PIECE 11 S/N30-11345 PRIMARY | Century Instrument Co (USA) |
| B3620554-01 S/N 30-11345 | Century Instrument Co (USA) |
| Reference | Meaning |
|---|---|
| 00201205941 PIECE 11 SIZE 3/4IN. | 5/9 Secondary reference Warren Controls, Inc. |
| 3620554-01 | 5/9 Secondary reference Warren Controls, Inc. |
NSN 4820-01-439-5100 is a Stem,fluid Valve, manufactured by Warren Controls, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-439-5100 has 3 manufacturer part numbers on file: B3620554-01 (Warren Controls, Inc.), 00201205941 PIECE 11 S/N30-11345 (Century Instrument Co), B3620554-01 S/N 30-11345 (Century Instrument Co).
Key specifications for B3620554-01: Valve Type for Which Designed: REGULATOR; Stem Actuating End Type: THREADED INTERNALLY; Valve Model Number for Which Designed: 20S; Valve Size for Which Designed: 0.750 INCHES IN. 5 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.