The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-793-3124, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-793-3124 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM |
| Second End Seat Angle in Deg | 37.0 |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | NOT IDENTICAL |
| Second End Thread Class | 1B |
| Body Style | STRAIGHT THRU |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Thread Class | 1B |
| First End Style Designator | GASKET SEAL |
| Temp Rating | 160.0 FAHRENHEIT NOMINAL DEGF |
| End Connection Quantity | 2 |
| Second End Thread Direction | RIGHT-HAND |
| Valve Loading Method | SPRING |
| Second End Style Designator | FLARE |
| First End Connection Type | THREADED INTERNAL BOSS |
| Material | ALUMINUM AND STEEL BODY |
| Media for Which Designed | FLUID, PETROLEUM BASE |
| Maximum Inlet Pressure Rating | ERR-060 |
| Second End Connection Type | THREADED INTERNAL TUBE |
| Thread Size and Series/type Designator | 9/16-18 UNF SECOND END |
| Thread Size and Series/type Designator | 0.562-18 UNF FIRST END |
| Filter | NOT INCLUDED |
| Second End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1121-6-3.5 | 5/9 Secondary reference U.S. Government activity |
| MIL-V-8566 | 4/1 Identification reference U.S. Government activity |
| MS28886-6-3.5 | 2/2 Government specification standardization U.S. Government activity |
| 01121-6 | D/9 Drawing number reference only U.S. Government activity |
| 1121-6-3.5 | 5/1 Secondary reference U.S. Government activity |
| 7723641P1 | 5/1 Secondary reference Lockheed Martin Corporation Div Rms |
NSN 4820-00-793-3124 is a Valve,regulating,fluid Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 1650-00-995-5253, 3040-01-303-7447. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-793-3124: Flow Control Device: DIAPHRAGM; Second End Seat Angle in Deg: 37.0; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: NOT IDENTICAL. 23 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.