The Ring,valve Piston, cataloged under National Stock Number 4820-01-117-6834, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-117-6834 |
| Primary Part Number | 859989-47 |
| Item Name | Ring,valve Piston |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CORROSION RESISTING OVERALL PER MIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| 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 |
|---|---|
| 859989-47 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 859989-47 | 5/9 Secondary reference U.S. Government activity |
| 859989-47 | 5/2 Secondary reference U.S. Government activity |
| 859989 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-117-6834 is a Ring,valve Piston, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-117-6834 has 1 manufacturer part number on file: 859989-47 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
3 possible matches (shared part number, not a government interchangeability claim): 4310-01-178-9679, 4310-01-183-7171, 6150-01-421-3516. Verify interchangeability with system specifications before substitution.
Key specifications for 859989-47: General Characteristics Item Description: STEEL,CORROSION RESISTING OVERALL PER MIL-S-6721 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Special Features: OVERALL DIAM. IS 1.400 IN., WIDTH IS 0.045 IN. 1 specification is 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.