The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-200-8684, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bahr Machine Company Inc Dba Bahr Machine Co. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-200-8684 |
| Primary Part Number | 273417 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bahr Machine Company Inc Dba Bahr Machine Co |
| Status | ACTIVE |
| Valve Loading Method | SPRING |
| Media for Which Designed | NITROGEN, GASEOUS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 273417 PRIMARY | Bahr Machine Company Inc Dba Bahr Machine Co (USA) |
| Reference | Meaning |
|---|---|
| 273417 | 5/9 Secondary reference Pneu-Hydro Products |
NSN 4820-01-200-8684 is a Valve,regulating,fluid Pressure, manufactured by Bahr Machine Company Inc Dba Bahr Machine Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-200-8684 has 1 manufacturer part number on file: 273417 (Bahr Machine Company Inc Dba Bahr Machine Co).
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-368-8167, 6515-01-615-2124. Verify interchangeability with system specifications before substitution.
Key specifications for 273417: Valve Loading Method: SPRING; Special Features: ULTRASONICALLY CLEAN ALL PARTS PER PHP SPEC 30,054 EXCEPT USE SOLVENT PER FED SPEC P-D-680; Media for Which Designed: NITROGEN, GASEOUS. 2 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.
NSN 4820-01-200-8684 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.