The Valve,check, cataloged under National Stock Number 4820-01-434-8209, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sun Hydraulics Corporation. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-434-8209 |
| Primary Part Number | CDAB-XBN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sun Hydraulics Corporation |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Style Designator | SCREW-IN CARTRIDGE |
| 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 |
|---|---|
| CDAB XBN | Sun Hydraulics Ltd (GBR) |
| CDAB-XBN PRIMARY | Sun Hydraulics Corporation (USA) |
| 40082465 | Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt) (GBR) |
| P-028883 | Kongsberg Maritime Ltd Div Kongsberg Maritime (GBR) |
| CDAB XBN | Branch Hydrauluc Systems Ltd (GBR) |
| Reference | Meaning |
|---|---|
| A12454/16 | 5/9 Secondary reference Twiflex Ltd |
| A12454 ITEM 16 | 5/9 Secondary reference Twiflex Ltd |
| 994103/40 | 5/9 Secondary reference Rolls-Royce Ab |
| 994103/40 | 5/9 Secondary reference Kamewa |
| 7500396 | 5/9 Secondary reference Twiflex Ltd |
| A12454 ITEM 16 | 5/9 Secondary reference Twiflex Ltd |
| 994103A/40 | C/1 Advisory reference — outside the item-of-supply concept Kamewa Usa Inc |
| 7500396 | 5/9 Secondary reference Twiflex Ltd |
| A12454/16 | 5/9 Secondary reference Twiflex Ltd |
NSN 4820-01-434-8209 is a Valve,check, manufactured by Sun Hydraulics Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-434-8209 has 5 manufacturer part numbers on file: CDAB XBN (Sun Hydraulics Ltd), CDAB-XBN (Sun Hydraulics Corporation), 40082465 (Ministry of Defence, Future Aircraft Carrier Ipt (cvf Ipt)), P-028883 (Kongsberg Maritime Ltd Div Kongsberg Maritime), CDAB XBN (Branch Hydrauluc Systems Ltd).
Key specifications for CDAB-XBN: Flow Control Device: BALL; Style Designator: SCREW-IN CARTRIDGE; Special Features: U/O KAMEWA HYDRAULIC POWER PACK ASSEMBLY; 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.