The Stem,fluid Valve, cataloged under National Stock Number 4820-01-260-0637, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Caltam, Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-260-0637 |
| Primary Part Number | 15414-31 6 IN #442 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Caltam, Inc |
| Status | ACTIVE |
| Valve Type for Which Designed | REGULATOR |
| Largest Outside Diameter | 1.250 INCHES NOMINAL IN |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Model Number for Which Designed | 400 |
| Valve Size for Which Designed | 6.000 INCHES IN |
| Material | STEEL COMP 303S |
| 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 |
|---|---|
| 15414-31 6 IN #442 PRIMARY | Caltam, Inc (USA) |
| Reference | Meaning |
|---|---|
| 15414-33 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-260-0637 is a Stem,fluid Valve, manufactured by Caltam, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-260-0637 has 1 manufacturer part number on file: 15414-31 6 IN #442 (Caltam, Inc).
Key specifications for 15414-31 6 IN #442: Valve Type for Which Designed: REGULATOR; Largest Outside Diameter: 1.250 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Valve Model Number for Which Designed: 400. 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.