The Valve,check, cataloged under National Stock Number 4820-01-213-4301, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William E Williams Valve Corp. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-213-4301 |
| Primary Part Number | 151F 8088 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Nominal Pipe Size Accommodated | 2.000 INCHES SECOND END IN |
| Flange Face Design | RAISED STRAIGHT FIRST END |
| Bolt Circle Nominal Diameter | 4.750 INCHES FIRST END IN |
| Connection Type | BUTT WELD PIPE SECOND END |
| Connection Type | FLANGE FIRST END |
| Bolt Hole Nominal Diameter | 0.750 INCHES FIRST END IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 500.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 6.000 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Material | STEEL OVERALL |
| Raised Face Nominal Diameter | 3.625 INCHES FIRST END IN |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 0.062 INCHES FIRST END IN |
| 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 |
|---|---|
| 151F 8088 PRIMARY | William E Williams Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| 8088 151F | C/1 Advisory reference — outside the item-of-supply concept William E Williams Valve Corp |
NSN 4820-01-213-4301 is a Valve,check, manufactured by William E Williams Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-213-4301 has 1 manufacturer part number on file: 151F 8088 (William E Williams Valve Corp).
Key specifications for 151F 8088: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES FIRST END; Nominal Pipe Size Accommodated: 2.000 INCHES SECOND END IN; Flange Face Design: RAISED STRAIGHT FIRST END. 17 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.