The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-349-0411, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-349-0411 |
| Primary Part Number | AD-8686-62D6 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| First End Thread Series Designator | UNJEF |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | 200.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | NOT IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Thread Class | 3A A |
| First End Style Designator | PLAIN |
| Material Document and Classification | AMS 4112, T351 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | AMS 5659, 15-5PH ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | AMS5629, COMP XM-13 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED EXTERNAL PIPE |
| Temp Adjustability | ADJUSTABLE |
| Surface Treatment | ANODIZE OUTSIDE |
| Material | ALUMINUM ALLOY 2024 BODY |
| Material | STEEL COMP XM-12 SEAT |
| Material | STEEL COMP XM-13 FLOW CONTROL DEVICE |
| First End Nominal Thread Size | 0.750 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AD-8686-62D6 PRIMARY | Pall Aeropower Corporation (USA) |
NSN 4820-01-349-0411 is a Valve,relief,pressure and Temper, manufactured by Pall Aeropower Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-349-0411 has 1 manufacturer part number on file: AD-8686-62D6 (Pall Aeropower Corporation).
Key specifications for AD-8686-62D6: Flow Control Device: POPPET; First End Thread Series Designator: UNJEF; First End Thread Direction: RIGHT-HAND; Temp Rating: 200.0 FAHRENHEIT DEGF. 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.
NSN 4820-01-349-0411 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.