The Valve,linear,directional Control, cataloged under National Stock Number 4820-00-253-5487, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kalmar AC Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-253-5487 |
| Primary Part Number | 74783499 |
| Item Name | Valve,linear,directional Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kalmar AC Inc |
| Status | ACTIVE |
| End Connection Quantity | 5 |
| Body Material | STEEL |
| 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 |
|---|---|
| 74783499 PRIMARY | Kalmar AC Inc (USA) |
| Reference | Meaning |
|---|---|
| 3302-39 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-253-5487 is a Valve,linear,directional Control, manufactured by Kalmar AC Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-253-5487 has 1 manufacturer part number on file: 74783499 (Kalmar AC Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5950-01-069-4838, 4820-01-312-6709. Verify interchangeability with system specifications before substitution.
Key specifications for 74783499: End Connection Quantity: 5; Body Material: STEEL; Valve Operation Method: AUTOMATIC. 3 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.