The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-425-2833, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corp Div Sporlan Division. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-425-2833 |
| Primary Part Number | ADRI-1-1/4-0/100-1/4X3/8 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corp Div Sporlan Division |
| Status | ACTIVE |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | TEE |
| First End Style Designator | SOCKET |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| Second End Style Designator | PLAIN |
| First End Connection Type | UNTHREADED INTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Media for Which Designed | REFRIGERANT, NONCORROSIVE |
| Second End Connection Type | UNTHREADED INTERNAL TUBE |
| Second End Outside Diameter Tube Accommodated | 0.250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ADRI-1-1/4-0/100-1/4X3/8 PRIMARY | Parker-Hannifin Corp Div Sporlan Division (USA) |
| Reference | Meaning |
|---|---|
| 9167794-1 | C/1 Advisory reference — outside the item-of-supply concept Drs Environmental Systems Inc |
| 9167794-1 | 5/9 Secondary reference U.S. Government activity |
| 9167794-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-425-2833 is a Valve,regulating,system Pressure, manufactured by Parker-Hannifin Corp Div Sporlan Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-425-2833 has 1 manufacturer part number on file: ADRI-1-1/4-0/100-1/4X3/8 (Parker-Hannifin Corp Div Sporlan Division).
Key specifications for ADRI-1-1/4-0/100-1/4X3/8: Second End Relationship with First End: NOT IDENTICAL; Body Style: TEE; First End Style Designator: SOCKET; End Connection Quantity: 2. 11 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 4820-01-425-2833 has DEMIL Code Q. 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.