The Seat,valve, cataloged under National Stock Number 4820-01-241-2013, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-241-2013 |
| Primary Part Number | 174982CP |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.070 INCHES NOMINAL IN |
| Flange Diameter | 0.434 INCHES MINIMUM IN |
| Body Outside Diameter | 0.317 INCHES MINIMUM IN |
| Criticality Code Justification | ZZZY |
| Style Designator | PLAIN FLANGED |
| Seat Radius | 0.002 INCHES MAXIMUM IN |
| Under Flange Height | 0.213 INCHES MINIMUM IN |
| Material | PLASTIC OVERALL |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Seating Surface Shape | RADIAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 174982CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 174982 | 3/1 Design control — primary reference U.S. Government activity |
| 174982CP | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-241-2013 is a Seat,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-241-2013 has 1 manufacturer part number on file: 174982CP (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-502-9535. Verify interchangeability with system specifications before substitution.
Key specifications for 174982CP: Flange Seat to Disk End Height: 0.070 INCHES NOMINAL IN; Flange Diameter: 0.434 INCHES MINIMUM IN; Body Outside Diameter: 0.317 INCHES MINIMUM IN; Criticality Code Justification: ZZZY. 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.
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.