The Valve,check, cataloged under National Stock Number 4820-01-441-6829, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kalmar Solutions Ab. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-441-6829 |
| Primary Part Number | 3885172-801 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kalmar Solutions Ab |
| Status | ACTIVE |
| Mounting Position | HORIZONTAL |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 300.0 BAR MAXIMUM SINGLE RESPONSE |
| Disk Loading Method | SPRING |
| Opening Pressure Setting | 7.5 BAR |
| 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 |
|---|---|
| 3885172-801 PRIMARY | Kalmar Solutions Ab (SWE) |
| Reference | Meaning |
|---|---|
| 1877805-801 ITEM NO. 018 | 5/9 Secondary reference Cargotec Sweden Ab - Macgregor Cranes |
| 1877805-801 ITEM NO. 018 | 5/1 Secondary reference Kalmar Solutions Ab |
| 3885172-801 | 3/9 Design control — primary reference Cargotec Sweden Ab - Macgregor Cranes |
NSN 4820-01-441-6829 is a Valve,check, manufactured by Kalmar Solutions Ab, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-441-6829 has 1 manufacturer part number on file: 3885172-801 (Kalmar Solutions Ab).
Key specifications for 3885172-801: Mounting Position: HORIZONTAL; Style Designator: STRAIGHT THRU; Operating Pressure: 300.0 BAR MAXIMUM SINGLE RESPONSE; Disk Loading Method: SPRING. 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.