The Adapter Valve,backfill, cataloged under National Stock Number 4820-01-004-1690, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-004-1690 |
| Primary Part Number | TF1191 |
| Item Name | Adapter Valve,backfill |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
| Status | ACTIVE |
| General Characteristics Item Description | CHROME PLATED BRASS,RUBBER,2.000 IN. BY 6.000 IN. BY 6.000 IN |
| 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 |
|---|---|
| TF1191 PRIMARY | Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations (USA) |
| Reference | Meaning |
|---|---|
| TF1191 | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Fluid Systems Division |
NSN 4820-01-004-1690 is a Adapter Valve,backfill, manufactured by Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-004-1690 has 1 manufacturer part number on file: TF1191 (Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations).
Key specifications for TF1191: General Characteristics Item Description: CHROME PLATED BRASS,RUBBER,2.000 IN. BY 6.000 IN. BY 6.000 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.