The Stem,fluid Valve, cataloged under National Stock Number 4820-01-255-6689, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-255-6689 |
| Primary Part Number | 04134815 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division |
| Status | ACTIVE |
| Valve Type for Which Designed | GATE |
| Largest Outside Diameter | 1.125 INCHES NOMINAL IN |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Size for Which Designed | 5.000 INCHES IN |
| Material | STEEL |
| 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 |
|---|---|
| 04134815 PRIMARY | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division (USA) |
| Reference | Meaning |
|---|---|
| D20062 PART 25 | 5/2 Secondary reference U.S. Government activity |
| D20062 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-255-6689 is a Stem,fluid Valve, manufactured by Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-255-6689 has 1 manufacturer part number on file: 04134815 (Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-255-6744, 4820-01-255-8882, 4820-01-256-3602. Verify interchangeability with system specifications before substitution.
Key specifications for 04134815: Valve Type for Which Designed: GATE; Largest Outside Diameter: 1.125 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Valve Size for Which Designed: 5.000 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.