The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-275-0579, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-275-0579 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Flow Control Device | PISTON, SPRING LOADED |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 7.500 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Flange Thickness | 0.625 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 4.625 INCHES NOMINAL IN |
| First End Style Designator | RAISED |
| First End Bolt Hole Diameter | 0.750 INCHES NOMINAL IN |
| First End Raised Face Diameter | 1.687 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 3.250 INCHES NOMINAL IN |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | RAISED FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| First End Raised Face Height | 0.250 INCHES NOMINAL IN |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Filter | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NAP732 | D/9 Drawing number reference only Atlas Valve Co |
| NAP732 CDS-4 | 3/9 Design control — primary reference Atlas Valve Co |
NSN 4820-01-275-0579 is a Valve,regulating,fluid Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-275-0579: First End Bolt Hole Quantity: 4; Flow Control Device: PISTON, SPRING LOADED; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 21 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.