The Valve,angle, cataloged under National Stock Number 4820-01-189-3154, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-189-3154 |
| Primary Part Number | SS-1GF4-A-BKB |
| Item Name | Valve,angle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Flow Control Device | STEM |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Style Designator | ANGLE |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Mounting Facility | BULKHEAD |
| Bonnet Attachment Method | THREADED |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Series Designator | NPT FIRST END |
| 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-1GF4-A-BKB PRIMARY | Swagelok Co (USA) |
| SS-1GF4-A W/A-5-16G PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| GV500SJ | 7/1 Vendor item drawing reference Northrop Grumman Systems Corporation |
| SS-1GF4-A W/A-5-16G | 5/9 Secondary reference Whitey Co |
| SS-1GF4-A-BKB | 5/9 Secondary reference Whitey Co |
NSN 4820-01-189-3154 is a Valve,angle, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-189-3154 has 2 manufacturer part numbers on file: SS-1GF4-A-BKB (Swagelok Co), SS-1GF4-A W/A-5-16G (Swagelok Co).
Key specifications for SS-1GF4-A-BKB: Flow Control Device: STEM; Connection Style: PLAIN,OPTIONAL END(PIPE) FIRST END; Connection Type: THREADED INTERNAL PIPE FIRST END; Style Designator: ANGLE. 12 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.