The Retainer,disk,valve, cataloged under National Stock Number 4820-01-328-2131, 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-328-2131 |
| Primary Part Number | 90P808-S-RCP |
| Item Name | Retainer,disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | AMS 5640, TYPE 1 ASSN STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 77842-190000 MANUFACTURERS STANDARD |
| Valve Size for Which Designed | 0.500 INCHES IN |
| Valve Design Control Activity | 77842 |
| Material | STEEL COMP 303 |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| 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 |
|---|---|
| 90P808-S-RCP | Naval Inventory Control Point Mechanicsburg (USA) |
| 190000 PC 7CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 90P808-S-R | 5/1 Secondary reference Eaton Corporation Dba Eaton Inoac Div Eaton |
| 190000 PC 7 | 3/1 Design control — primary reference Eaton Corporation Dba Eaton Inoac Div Eaton |
NSN 4820-01-328-2131 is a Retainer,disk,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-328-2131 has 2 manufacturer part numbers on file: 90P808-S-RCP (Naval Inventory Control Point Mechanicsburg), 190000 PC 7CP (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-556-9521. Verify interchangeability with system specifications before substitution.
Key specifications for 90P808-S-RCP: Criticality Code Justification: ZZZY; Material Document and Classification: AMS 5640, TYPE 1 ASSN STD SINGLE MATERIAL RESPONSE; Specification/standard Data: 77842-190000 MANUFACTURERS STANDARD; Valve Size for Which Designed: 0.500 INCHES IN. 7 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.