The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-270-3405, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-270-3405 |
| Primary Part Number | RKQ3 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Material | RUBBER |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| C60SMJ2 W/HWL-14 | Portland Valve Llc (USA) |
| RKQ3 PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| C-60SMJ2 W/HW-1 | C/1 Advisory reference — outside the item-of-supply concept Metso Automation Usa, Inc |
| RK03 | 5/9 Secondary reference Portland Valve Llc |
NSN 4820-01-270-3405 is a Diaphragm,valve,flat, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-270-3405 has 2 manufacturer part numbers on file: C60SMJ2 W/HWL-14 (Portland Valve Llc), RKQ3 (Portland Valve Llc).
Key specifications for RKQ3: Criticality Code Justification: FEAT; Special Features: WEAPON SYSTEM ESSENTIAL; End Item Identification: JAMESBURY CORP,VALVE ACTUATOR,MODEL C60S;USNS HENRY J. KAISER CLASS TAO; Material: RUBBER. 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.