The Valve,float, cataloged under National Stock Number 4820-01-425-8108, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Armstrong International Inc Dba Armstrong Machine Works. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-425-8108 |
| Primary Part Number | 32-LD-3/4NPT-1/8ORIFICE |
| Item Name | Valve,float |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Armstrong International Inc Dba Armstrong Machine Works |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Maximum Operating Temp | 750.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL UNS K03504 BODY |
| Material | STEEL CORROSION RESISTING SEAT |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 32-LD-3/4NPT-1/8ORIFICE PRIMARY | Armstrong International Inc Dba Armstrong Machine Works (USA) |
| Reference | Meaning |
|---|---|
| 32-LD3/4NPT-1/8 | C/1 Advisory reference — outside the item-of-supply concept Armstrong International Inc Dba Armstrong Machine Works |
NSN 4820-01-425-8108 is a Valve,float, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-425-8108 has 1 manufacturer part number on file: 32-LD-3/4NPT-1/8ORIFICE (Armstrong International Inc Dba Armstrong Machine Works).
Key specifications for 32-LD-3/4NPT-1/8ORIFICE: Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Operating Pressure: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Thread Direction: RIGHT-HAND ALL ENDS. 11 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.