The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-01-231-6659, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-231-6659 |
| Primary Part Number | SS-8P6T |
| Item Name | Valve,bleeder,hydraulic System |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | AISICOM+316 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL CORROSION RESISTING BODY |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| SS-8P6T PRIMARY | Swagelok Co (USA) |
| CV0561-001 | Northrop Grumman Corp Electronic Systems Defensive System Div (USA) |
| Reference | Meaning |
|---|---|
| SS-8P6T | 5/9 Secondary reference Nupro Co |
NSN 4820-01-231-6659 is a Valve,bleeder,hydraulic System, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-231-6659 has 2 manufacturer part numbers on file: SS-8P6T (Swagelok Co), CV0561-001 (Northrop Grumman Corp Electronic Systems Defensive System Div).
Key specifications for SS-8P6T: Style Designator: STRAIGHT THRU; Material Document and Classification: AISICOM+316 ASSN STD SINGLE MATERIAL RESPONSE BODY; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF. 6 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.