The Valve,check, cataloged under National Stock Number 4820-01-574-3612, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tyco Fire Products Lp. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Parker Hannifin Gmbh -Geschaftsbereich Ermeto- (CAGE D8134); Tyco Fire Products Lp (CAGE 03670); Semco Marine Svendborg (CAGE R3342) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-574-3612 |
| Primary Part Number | 440194 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| 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 |
|---|---|
| RHV35LR | Parker Hannifin Gmbh -Geschaftsbereich Ermeto- (DEU) |
| 440194 PRIMARY | Tyco Fire Products Lp (USA) |
| 1000084775 | Semco Marine Svendborg (DNK) |
| Reference | Meaning |
|---|---|
| 472056 | 3/9 Design control — primary reference Tyco Fire Products Lp |
| S-472056 | 5/9 Secondary reference Tyco Fire Products Lp |
| GA-95698-01 ITEM 19 | 5/9 Secondary reference Tyco Fire Products Lp |
NSN 4820-01-574-3612 is a Valve,check, manufactured by Tyco Fire Products Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-574-3612 has 3 manufacturer part numbers on file: RHV35LR (Parker Hannifin Gmbh -Geschaftsbereich Ermeto-), 440194 (Tyco Fire Products Lp), 1000084775 (Semco Marine Svendborg).
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.