The Valve,calibrated Flow, cataloged under National Stock Number 4820-01-414-8042, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 10 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. 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 | 4820-01-414-8042 |
| Primary Part Number | 21242-001 |
| Item Name | Valve,calibrated Flow |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Offset Distance | 1.000 INCHES NOMINAL IN |
| Body Style | STRAIGHT THRU W/OFFSET |
| Material Document and Classification | QQ-A-225/8, T651 FED SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| End Connection Quantity | 2 |
| Surface Treatment | ANODIZE OUTSIDE |
| Material | UNABLE TO DECODE |
| Maximum Inlet Pressure Rating | ERR-060 |
| Valve Discharge Flow Rate | 3.0 GALLONS PER MINUTE AND 20.0 GALLONS PER MINUTE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21242-001 PRIMARY | Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA) |
NSN 4820-01-414-8042 is a Valve,calibrated Flow, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-414-8042 has 1 manufacturer part number on file: 21242-001 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-733-9259. Verify interchangeability with system specifications before substitution.
Key specifications for 21242-001: Flow Control Device: POPPET; Surface Treatment Document and Classification: MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE; Offset Distance: 1.000 INCHES NOMINAL IN; Body Style: STRAIGHT THRU W/OFFSET. 10 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.
NSN 4820-01-414-8042 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.