The Valve,angle, cataloged under National Stock Number 4820-01-346-4123, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Noel-Smyser Engineering Corporation Dba Noel Smyser Engineering Corp. Government technical data includes 22 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-346-4123 |
| Primary Part Number | SS-3NRS4 |
| Item Name | Valve,angle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Noel-Smyser Engineering Corporation Dba Noel Smyser Engineering Corp |
| Status | ACTIVE |
| Flow Control Device | NEEDLE |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Style Designator | ANGLE |
| Material Document and Classification | MIL-P-5315 MIL SPEC SINGLE MATERIAL RESPONSE PACKING |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Maximum Operating Temp | 200.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Facility | PANEL |
| Bonnet Attachment Method | BOLTED |
| Media for Which Designed | OIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 20 ALL ENDS |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | STEEL CORROSION RESISTING STEM |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) ALL ENDS |
| 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-3NRS4 PRIMARY | Noel-Smyser Engineering Corporation Dba Noel Smyser Engineering Corp (USA) |
| Reference | Meaning |
|---|---|
| 0151B-3X-4SS1P | 3/9 Design control — primary reference U.S. Government activity |
| 0148-4SSP | 5/9 Secondary reference Noel-Smyser Engineering Corporation Dba Noel Smyser Engineering Corp |
| SS-3NRS4 | 5/9 Secondary reference Swagelok Co Dba Use CAGE Code 3t9t9 for Cataloging |
| 0-151B-3X-4SS-1P | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-346-4123 is a Valve,angle, manufactured by Noel-Smyser Engineering Corporation Dba Noel Smyser Engineering Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-346-4123 has 1 manufacturer part number on file: SS-3NRS4 (Noel-Smyser Engineering Corporation Dba Noel Smyser Engineering Corp).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-719-6038. Verify interchangeability with system specifications before substitution.
Key specifications for SS-3NRS4: Flow Control Device: NEEDLE; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS; Connection Type: THREADED EXTERNAL BOSS ALL ENDS; Style Designator: ANGLE. 22 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.