The Valve,check, cataloged under National Stock Number 4820-01-145-7675, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydro-Stack Mfg Corp Sub of the Oilgear Co. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-145-7675 |
| Primary Part Number | HSN-1201-TR-NY |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hydro-Stack Mfg Corp Sub of the Oilgear Co |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Material | STEEL CORROSION RESISTING BODY |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| L400181HS03 | Hydro-Stack Mfg Corp Sub of the Oilgear Co (USA) |
| HSN-1201-TR-NY PRIMARY | Hydro-Stack Mfg Corp Sub of the Oilgear Co (USA) |
| Reference | Meaning |
|---|---|
| HSN-1201-TR | 5/9 Secondary reference Hydro-Stack Mfg Corp Sub of the Oilgear Co |
| L400181HS02 | 5/9 Secondary reference Hydro-Stack Mfg Corp Sub of the Oilgear Co |
| L400181HS03 | C/1 Advisory reference — outside the item-of-supply concept The Oilgear Company Dba Jiffy Lube 213 Div Oilgear |
NSN 4820-01-145-7675 is a Valve,check, manufactured by Hydro-Stack Mfg Corp Sub of the Oilgear Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-145-7675 has 2 manufacturer part numbers on file: L400181HS03 (Hydro-Stack Mfg Corp Sub of the Oilgear Co), HSN-1201-TR-NY (Hydro-Stack Mfg Corp Sub of the Oilgear Co).
Key specifications for HSN-1201-TR-NY: Flow Control Device: DISK; Material: STEEL CORROSION RESISTING BODY; Valve Operation Method: AUTOMATIC. 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.