The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-627-9061, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 7 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 | 4820-01-627-9061 |
| Primary Part Number | 591AS200-1 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Flow Control Device | NEEDLE |
| Face to Face Distance | 4.44 INCHES NOMINAL IN |
| Third Connection Face to Centerline Distance | 2.44 INCHES NOMINAL IN |
| Body Outside Diameter | 3.00 INCHES NOMINAL IN |
| Material Document and Classification | ALUMINUM ALLOY, 2024 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| End Connection Quantity | 4 |
| Material | ALUMINUM ALLOY 2024 BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 591AS200-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 4820-01-627-9061 is a Valve,relief,pressure and Temper, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-627-9061 has 1 manufacturer part number on file: 591AS200-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 591AS200-1: Flow Control Device: NEEDLE; Face to Face Distance: 4.44 INCHES NOMINAL IN; Third Connection Face to Centerline Distance: 2.44 INCHES NOMINAL IN; Body Outside Diameter: 3.00 INCHES NOMINAL IN. 7 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.