The Ball,check, cataloged under National Stock Number 4820-01-451-3751, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydraseal Valve Co Inc. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-451-3751 |
| Primary Part Number | B5X |
| Item Name | Ball,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hydraseal Valve Co Inc |
| Status | ACTIVE |
| Valve Model Number for Which Designed | 24FL1ARVOL |
| Valve Size for Which Designed | 1.500 INCHES IN |
| Valve Design Control Activity | 092R6 |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| B5X PRIMARY | Hydraseal Valve Co Inc (USA) |
NSN 4820-01-451-3751 is a Ball,check, manufactured by Hydraseal Valve Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-451-3751 has 1 manufacturer part number on file: B5X (Hydraseal Valve Co Inc).
Key specifications for B5X: Valve Model Number for Which Designed: 24FL1ARVOL; Valve Size for Which Designed: 1.500 INCHES IN; Valve Design Control Activity: 092R6; Material: STEEL CORROSION RESISTING. 4 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.