The Seat,valve, cataloged under National Stock Number 4820-01-316-2563, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-316-2563 |
| Primary Part Number | S-4115-3 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
| Status | ACTIVE |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-A-250 FED SPEC 1ST MATERIAL RESPONSE SEAT |
| Material | NICKEL ALLOY SEAT |
| 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 |
|---|---|
| S-4115-3 PRIMARY | Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company (USA) |
| Reference | Meaning |
|---|---|
| S-4115 ITEM 3 | C/1 Advisory reference — outside the item-of-supply concept Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
| S-4115 | D/9 Drawing number reference only Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company |
NSN 4820-01-316-2563 is a Seat,valve, manufactured by Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-316-2563 has 1 manufacturer part number on file: S-4115-3 (Ruggles-Klingemann Mfg Co Dba the Ruggles-Klingemann Company).
1 possible match (shared part number, not a government interchangeability claim): 8115-01-601-7419. Verify interchangeability with system specifications before substitution.
Key specifications for S-4115-3: Style Designator: PLAIN; Material Document and Classification: QQ-A-250 FED SPEC 1ST MATERIAL RESPONSE SEAT; Special Features: BOTTOM COVER; Material: NICKEL ALLOY SEAT. 4 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.