The Disk,valve, cataloged under National Stock Number 4820-01-172-5808, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rix Industries. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-172-5808 |
| Primary Part Number | 15-435-1 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Rix Industries |
| Status | ACTIVE |
| Outside Diameter | 1.234 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 0.617 INCHES NOMINAL IN |
| Media for Which Designed | OIL |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 15-435-1 PRIMARY | Rix Industries (USA) |
| Reference | Meaning |
|---|---|
| D1327 | D/9 Drawing number reference only Rix Industries |
| D1327PC55C | 5/9 Secondary reference Rix Industries |
NSN 4820-01-172-5808 is a Disk,valve, manufactured by Rix Industries, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-172-5808 has 1 manufacturer part number on file: 15-435-1 (Rix Industries).
2 possible matches (shared part number, not a government interchangeability claim): 5915-01-230-4518, 5985-01-695-9165. Verify interchangeability with system specifications before substitution.
Key specifications for 15-435-1: Overall Height: 0.043 INCHES NOMINAL IN; Outside Diameter: 1.234 INCHES NOMINAL IN; Style Designator: PLAIN; Inside Diameter: 0.617 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.