The Valve,angle, cataloged under National Stock Number 4820-00-477-1928, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 27 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-477-1928 |
| Primary Part Number | B-SS2-A |
| Item Name | Valve,angle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Flow Control Device | DISKDISK |
| Furnished Items and Quantity | 2 FERRULE |
| Connection Style | FLARELESS (TUBE) ALL ENDSFLARELESS (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDSTHREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | ANGLE |
| Material Document and Classification | 18034 1704PH MFR REF SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEASTMB1-24-55 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | 18034 1704PH MFR REF SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | 18034 1704PH MFR REF SINGLE MATERIAL RESPONSE STEM18034 1704PH MFR REF SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTMB1-24-55 ASSN STD SINGLE MATERIAL RESPONSE SEATAST-31-24-55 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.125 INCHES ALL ENDS IN |
| Operating Pressure | 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | VALVE STEM LOCK SHIELDVALVE STEM LOCK SHIELD |
| Bonnet Type | INSIDE SCREWINSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.312 INCHES ALL ENDS0.312 INCHES ALL ENDS IN |
| Seat Angle | 20.0 DEGREES ALL ENDS |
| Maximum Operating Temp | 300.0 FAHRENHEIT SINGLE RESPONSE300.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Facility | BULKHEADBULKHEAD |
| Surface Treatment | CADMIUM |
| Bonnet Attachment Method | UNIONUNION |
| Thread Class | 2A ALL ENDS2A ALL ENDS A |
| Material | STEEL CORROSION RESISTING STEM |
| Material | STEEL CORROSION RESISTING STEMSTEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEATCOPPER ALLOY BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICECOPPER ALLOY SEAT |
| Thread Series Designator | UNF ALL ENDS |
| Valve Operation Method | MANUALMANUAL |
| 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 |
|---|---|
| B-SS2-A PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| B2SA | 5/9 Secondary reference Nupro Co |
| B-SS2-A | 5/9 Secondary reference Nupro Co |
| 920548-1 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
NSN 4820-00-477-1928 is a Valve,angle, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-477-1928 has 1 manufacturer part number on file: B-SS2-A (Swagelok Co).
Key specifications for B-SS2-A: Flow Control Device: DISKDISK; Furnished Items and Quantity: 2 FERRULE; Connection Style: FLARELESS (TUBE) ALL ENDSFLARELESS (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE ALL ENDSTHREADED EXTERNAL TUBE ALL ENDS. 27 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.