The Valve,check, cataloged under National Stock Number 4820-01-710-7827, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cla-Val Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-710-7827 |
| Primary Part Number | RF-DBF 4 INCH DB-EPR |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cla-Val Co |
| Status | ACTIVE |
| Nondefinitive Spec/std Data | 11 LBS. WEIGHT LBS |
| Material | RUBBER OVERALL |
| 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 |
|---|---|
| 21220231J | Northwestern Power Equipment Company Inc (USA) |
| RF-DBF 4 INCH DB-EPR PRIMARY | Cla-Val Co (USA) |
NSN 4820-01-710-7827 is a Valve,check, manufactured by Cla-Val Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-710-7827 has 2 manufacturer part numbers on file: 21220231J (Northwestern Power Equipment Company Inc), RF-DBF 4 INCH DB-EPR (Cla-Val Co).
Key specifications for RF-DBF 4 INCH DB-EPR: Nondefinitive Spec/std Data: 11 LBS. WEIGHT LBS; Material: RUBBER OVERALL. 2 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.