The Valve,check, cataloged under National Stock Number 4820-01-662-5807, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | International Valve Corp Dba Check-All Valve Mfg. Co. (CAGE 28396); Bird-Johnson Propeller Company, Llc (CAGE 07309) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-662-5807 |
| Primary Part Number | CNFSSVT.125SS |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| CNFSSVT.125SS | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
| CNFSSVT.125SS PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| NMM220601 REV C FIND NO. 4 | C/1 Advisory reference — outside the item-of-supply concept Bird-Johnson Propeller Company, Llc |
| NMM000098-002 | 3/9 Design control — primary reference Bird-Johnson Propeller Company, Llc |
| NMM000098 | D/9 Drawing number reference only Bird-Johnson Propeller Company, Llc |
NSN 4820-01-662-5807 is a Valve,check, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-662-5807 has 2 manufacturer part numbers on file: CNFSSVT.125SS (International Valve Corp Dba Check-All Valve Mfg. Co.), CNFSSVT.125SS (Bird-Johnson Propeller Company, Llc).
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.