The Disk,valve, cataloged under National Stock Number 4820-01-259-2402, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-259-2402 |
| Primary Part Number | 221-625-72 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Caltam, Inc |
| Status | ACTIVE |
| Pressure Rating | 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Outside Diameter | 5.750 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 2.500 INCHES NOMINAL IN |
| Media for Which Designed | WATER |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| N-735 ITEM 4 | Caltam, Inc (USA) |
| 221-625-72 PRIMARY | Caltam, Inc (USA) |
| Reference | Meaning |
|---|---|
| 221-625-72 | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| N-735 | D/9 Drawing number reference only Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-259-2402 is a Disk,valve, manufactured by Caltam, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-259-2402 has 2 manufacturer part numbers on file: N-735 ITEM 4 (Caltam, Inc), 221-625-72 (Caltam, Inc).
Key specifications for 221-625-72: Overall Height: 0.625 INCHES NOMINAL IN; Pressure Rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 5.750 INCHES NOMINAL IN; Style Designator: PLAIN. 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.