The Seat,valve, cataloged under National Stock Number 4820-00-083-4088, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mid-America Aerotech, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-083-4088 |
| Primary Part Number | 19328 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mid-America Aerotech, Llc |
| Status | ACTIVE |
| Flange Diameter | 0.350 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN |
| FSC Application Data | VALVE,LINEAR,DIRECTIONAL CONTROL,ACFT |
| Body Outside Diameter | 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.080 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Under Flange Height | 0.218 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN |
| Material | STEEL COMP 440C BODY |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 19328 PRIMARY | Mid-America Aerotech, Llc (USA) |
| Reference | Meaning |
|---|---|
| 19328 | 5/9 Secondary reference E-Systems Inc Montek Div Fluid Controls Opns |
| 19328 | 5/9 Secondary reference Moog Inc Div Moog Inc., Space and Defense - Salt Lake City |
| 19328 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-083-4088 is a Seat,valve, manufactured by Mid-America Aerotech, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-083-4088 has 1 manufacturer part number on file: 19328 (Mid-America Aerotech, Llc).
5 possible matches (shared part number, not a government interchangeability claim): 4820-00-541-0435, 5950-01-336-0232, 3460-01-433-4568. Verify interchangeability with system specifications before substitution.
Key specifications for 19328: Flange Diameter: 0.350 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN; FSC Application Data: VALVE,LINEAR,DIRECTIONAL CONTROL,ACFT; Body Outside Diameter: 0.248 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 9 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.