The Valve,stop-Check, cataloged under National Stock Number 4820-01-493-3571, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Meggitt (new Hampshire), Inc. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (CAGE 45934); Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited (CAGE U0J60); Meggitt (new Hampshire), Inc (CAGE 58880) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-493-3571 |
| Primary Part Number | VM4151003 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Meggitt (new Hampshire), Inc |
| 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 |
|---|---|
| VM4151003 | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| VM4151003 | Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited (GBR) |
| VM4151003 PRIMARY | Meggitt (new Hampshire), Inc (USA) |
| Reference | Meaning |
|---|---|
| VM4151003 | 5/9 Secondary reference Vibro-Meter Corp |
NSN 4820-01-493-3571 is a Valve,stop-Check, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-493-3571 has 3 manufacturer part numbers on file: VM4151003 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us), VM4151003 (Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited), VM4151003 (Meggitt (new Hampshire), Inc).
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.