The Ball,check, cataloged under National Stock Number 4820-01-426-7787, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Macgregor Sweden Ab. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-426-7787 |
| Primary Part Number | GL20 IT5 |
| Item Name | Ball,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Macgregor Sweden Ab |
| Status | ACTIVE |
| Spherical Diameter | 9.0 MILLIMETERS NOMINAL MM |
| Valve Model Number for Which Designed | GL20 |
| Valve Design Control Activity | S9886 |
| 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 |
|---|---|
| GL20 IT5 PRIMARY | Macgregor Sweden Ab (SWE) |
| Reference | Meaning |
|---|---|
| GL20 IT5 | 5/9 Secondary reference Tts Marine Ab |
| GL20 IT5 | 5/9 Secondary reference Tts Marine Ab Formerly Tts Ships Equipment Ab Div Dry Cargo Handling |
| GL20 IT5 | 3/9 Design control — primary reference Hamworthy Kse Ab |
NSN 4820-01-426-7787 is a Ball,check, manufactured by Macgregor Sweden Ab, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-426-7787 has 1 manufacturer part number on file: GL20 IT5 (Macgregor Sweden Ab).
Key specifications for GL20 IT5: Spherical Diameter: 9.0 MILLIMETERS NOMINAL MM; Valve Model Number for Which Designed: GL20; Special Features: CHECK BALL FOR INTAKE OF GL20 HAND PUMP; Part Name Assigned by Controlling Agency: BALL 9MM MM. 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.