The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-268-4076, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-268-4076 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| First End Thread Series Designator | NPT |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Body Style | STRAIGHT THRU |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 3A A |
| First End Style Designator | FLARED |
| End Connection Quantity | 2 |
| First End Seat Radius | 0.031 INCHES NOMINAL IN |
| Temp Control Device Type | THERMOSTATIC |
| First End Connection Type | THREADED EXTERNAL TUBE |
| Temp Adjustability | NOT ADJUSTABLE |
| Surface Treatment | ANODIZE OUTSIDE |
| First End Outside Diameter Tube Accommodated | 1.000 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | ALUMINUM ALLOY 2024 LOCATION NOT OTHERWISE SPECIFIED |
| First End Nominal Thread Size | 1.312 INCHES 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 |
|---|---|
| 332-2165-020 | 7/2 Vendor item drawing reference U.S. Government activity |
| 2R2634 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-268-4076 is a Valve,relief,pressure and Temper, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-268-4076: Flow Control Device: POPPET; First End Thread Series Designator: NPT; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 19 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.