The Seat,valve, cataloged under National Stock Number 4820-01-142-2063, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cepeda Associates, Inc. Dba Cepeda Associates Inc. 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. 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 | 4820-01-142-2063 |
| Primary Part Number | SP-12-8B |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cepeda Associates, Inc. Dba Cepeda Associates Inc |
| Status | ACTIVE |
| Body Outside Diameter | 1.052 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.621 INCHES NOMINAL IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| SP-12-8B PRIMARY | Cepeda Associates, Inc. Dba Cepeda Associates Inc (USA) |
NSN 4820-01-142-2063 is a Seat,valve, manufactured by Cepeda Associates, Inc. Dba Cepeda Associates Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-142-2063 has 1 manufacturer part number on file: SP-12-8B (Cepeda Associates, Inc. Dba Cepeda Associates Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-411-4806. Verify interchangeability with system specifications before substitution.
Key specifications for SP-12-8B: Overall Height: 0.202 INCHES NOMINAL IN; Body Outside Diameter: 1.052 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 0.621 INCHES NOMINAL 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.