The Valve,check, cataloged under National Stock Number 4820-01-656-6247, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. Government technical data includes 6 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-656-6247 |
| Primary Part Number | RK 2E |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 700.00 BAR MAXIMUM SINGLE RESPONSE |
| Nominal Thread Size | 0.375 INCHES FIRST END IN |
| Face to Face Distance | 44.00 MILLIMETERS MM |
| Material | STEEL BODY |
| 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 |
|---|---|
| RK 2E PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
NSN 4820-01-656-6247 is a Valve,check, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-656-6247 has 1 manufacturer part number on file: RK 2E (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division).
1 possible match (shared part number, not a government interchangeability claim): 7025-01-691-2089. Verify interchangeability with system specifications before substitution.
Key specifications for RK 2E: Flow Control Device: BALL; Style Designator: SCREW-IN CARTRIDGE; Operating Pressure: 700.00 BAR MAXIMUM SINGLE RESPONSE; Nominal Thread Size: 0.375 INCHES FIRST END IN. 6 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.