The Valve,check, cataloged under National Stock Number 4820-00-623-9087, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Oilgear Company Dba Jiffy Lube 213 Div Oilgear. Government technical data includes 24 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-623-9087 |
| Primary Part Number | CSP20A03 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Oilgear Company Dba Jiffy Lube 213 Div Oilgear |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Nominal Pipe Size Accommodated | 2.500 INCHES SECOND END IN |
| Flange Face Design | RECESSED STRAIGHT FIRST END |
| Connection Style | BEVELED (PIPE) SECOND END |
| Connection Style | GASKET SEAL (BOSS) THIRD END |
| Bolt Circle Nominal Diameter | 3.750 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL BOSS THIRD END |
| Connection Type | BUTT WELD PIPE SECOND END |
| Connection Type | FLANGE FIRST END |
| Style Designator | CROSS |
| Bolt Hole Nominal Diameter | 0.356 INCHES FIRST END IN |
| Thread Direction | RIGHT-HAND THIRD END |
| Nominal Thread Size | 0.750 INCHES THIRD END IN |
| Nominal Outside Diameter | 4.312 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 6 FIRST END |
| Surface Treatment | PAINT |
| Thread Class | 2B THIRD END |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF THIRD END |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.750 INCHES FIRST END IN |
| 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 |
|---|---|
| CSP20A03 PRIMARY | The Oilgear Company Dba Jiffy Lube 213 Div Oilgear (USA) |
| Reference | Meaning |
|---|---|
| CSP20A03 | 5/9 Secondary reference Vickers Inc |
| CSP20A03 | 5/9 Secondary reference Olmsted Products Company Llc |
NSN 4820-00-623-9087 is a Valve,check, manufactured by The Oilgear Company Dba Jiffy Lube 213 Div Oilgear, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-623-9087 has 1 manufacturer part number on file: CSP20A03 (The Oilgear Company Dba Jiffy Lube 213 Div Oilgear).
Key specifications for CSP20A03: Flow Control Device: POPPET; Flange Shape: ROUND WITH HOLES FIRST END; Nominal Pipe Size Accommodated: 2.500 INCHES SECOND END IN; Flange Face Design: RECESSED STRAIGHT FIRST END. 24 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.