The Disk,valve, cataloged under National Stock Number 4820-01-251-2660, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-251-2660 |
| Primary Part Number | 04103719 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division |
| Status | ACTIVE |
| Pressure Rating | 900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Temp Rating | 775.0 FAHRENHEIT MAXIMUM DEGF |
| Outside Diameter | 9.000 INCHES NOMINAL IN |
| Style Designator | SOLID |
| Media for Which Designed | STEAM |
| 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 |
|---|---|
| 04103719 PRIMARY | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division (USA) |
| 2536-5 PC 3 | Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division (USA) |
| Reference | Meaning |
|---|---|
| 2536-5 PIECE 3 | 5/9 Secondary reference U.S. Government activity |
| 2536-5 | D/9 Drawing number reference only U.S. Government activity |
| 2536-5-3 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-251-2660 is a Disk,valve, manufactured by Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-251-2660 has 2 manufacturer part numbers on file: 04103719 (Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division), 2536-5 PC 3 (Flowserve Us, Inc. Dba Automax Actuators Div Flow Control Division).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-251-5689, 4820-01-269-1627, 3040-01-545-8849. Verify interchangeability with system specifications before substitution.
Key specifications for 04103719: Pressure Rating: 900.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Temp Rating: 775.0 FAHRENHEIT MAXIMUM DEGF; Outside Diameter: 9.000 INCHES NOMINAL IN; Style Designator: SOLID. 6 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.