The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-307-1851, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-307-1851 |
| Primary Part Number | 7Z555 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Temp Rating | 125.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | ZINC BODY |
| Media for Which Designed | AIR |
| Furnished Items | PANEL MOUNTING BRACKET AND STRAINER AND INLET PRESSURE GAGE |
| Filter | INCLUDED |
| 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 |
|---|---|
| 7Z555 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 7Z555 | 3/9 Design control — primary reference Grainger W W Inc |
NSN 4820-01-307-1851 is a Valve,regulating,fluid Pressure, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-307-1851 has 1 manufacturer part number on file: 7Z555 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 7Z555: Flow Control Device: POPPET; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU; Temp Rating: 125.0 FAHRENHEIT MAXIMUM DEGF. 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.
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.