The Valve,float, cataloged under National Stock Number 4820-01-688-3102, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-688-3102 |
| Primary Part Number | D508011 |
| Item Name | Valve,float |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Armstrong International Inc Dba Armstrong Machine Works |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Material | STEEL BODY |
| Material | STEEL STAINLESS - USE STB000 SEAT |
| 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 |
|---|---|
| D508011 PRIMARY | Armstrong International Inc Dba Armstrong Machine Works (USA) |
| 71-315 3/4NPT 1/16 | Armstrong International Inc Dba Armstrong Machine Works (USA) |
| Reference | Meaning |
|---|---|
| D508011 | C/1 Advisory reference — outside the item-of-supply concept Associated Steam Specialty Co |
NSN 4820-01-688-3102 is a Valve,float, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-688-3102 has 2 manufacturer part numbers on file: D508011 (Armstrong International Inc Dba Armstrong Machine Works), 71-315 3/4NPT 1/16 (Armstrong International Inc Dba Armstrong Machine Works).
Key specifications for D508011: Flow Control Device: DISK; Material Document and Classification: ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY; Media for Which Designed: WATER, FRESH SINGLE RESPONSE; Part Name Assigned by Controlling Agency: VALVE,TRAP DRAINER. 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.