The Ball,check, cataloged under National Stock Number 4820-01-618-4424, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Riverside Tank & Manufacturing. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-618-4424 |
| Primary Part Number | RV-1 |
| Item Name | Ball,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Riverside Tank & Manufacturing |
| Status | ACTIVE |
| Valve Size for Which Designed | 0.25 INCHES IN |
| Valve Design Control Activity | 4X6B7 |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| RV-1 PRIMARY | Riverside Tank & Manufacturing (USA) |
NSN 4820-01-618-4424 is a Ball,check, manufactured by Riverside Tank & Manufacturing, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-618-4424 has 1 manufacturer part number on file: RV-1 (Riverside Tank & Manufacturing).
Key specifications for RV-1: Valve Size for Which Designed: 0.25 INCHES IN; Part Name Assigned by Controlling Agency: BALL CHECK VENT; Valve Design Control Activity: 4X6B7; End Item Identification: MRAP-COUGAR. 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.