The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-206-0835, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-206-0835 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | STEM AND INTEGRAL DISK |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | 275.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Thread Class | 2B |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED INTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.750 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING BODY |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Valve Discharge Flow Rate | 16.0 GALLONS PER MINUTE |
| Adjustable Pressure Range | 2300.0 TO 3850.0 CAMERA MOUNT |
| 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 |
|---|---|
| AS0530-01 | C/1 Advisory reference — outside the item-of-supply concept John Crane, Inc |
| 1505-3220 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-206-0835 is a Valve,relief,pressure and Temper, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5845-01-291-1305. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-206-0835: Flow Control Device: STEM AND INTEGRAL DISK; First End Thread Direction: RIGHT-HAND; Temp Rating: 275.0 FAHRENHEIT DEGF; Second End Relationship with First End: IDENTICAL. 15 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.