The Stem,fluid Valve, cataloged under National Stock Number 4820-01-487-1095, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Automatic Switch Company Dba Asco. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-487-1095 |
| Primary Part Number | 178221-001 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 BUSHING AND 2 DISK AND 1 LEVER AND 3 LOCKNUT AND 4 LOCK WASHER AND 2 NUT AND 1 O-RING AND 1 PISTON |
| Valve Type for Which Designed | SOLENOID |
| Valve Model Number for Which Designed | AV262534 |
| Material Document and Classification | QQ-N281 FED SPEC SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 178221-001 PRIMARY | Automatic Switch Company Dba Asco (USA) |
| AV 262534-1 ITEM 57 | Automatic Switch Company Dba Asco (USA) |
NSN 4820-01-487-1095 is a Stem,fluid Valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-487-1095 has 2 manufacturer part numbers on file: 178221-001 (Automatic Switch Company Dba Asco), AV 262534-1 ITEM 57 (Automatic Switch Company Dba Asco).
Key specifications for 178221-001: Furnished Items and Quantity: 2 BUSHING AND 2 DISK AND 1 LEVER AND 3 LOCKNUT AND 4 LOCK WASHER AND 2 NUT AND 1 O-RING AND 1 PISTON; Valve Type for Which Designed: SOLENOID; Valve Model Number for Which Designed: AV262534; Material Document and Classification: QQ-N281 FED SPEC SINGLE MATERIAL RESPONSE. 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.