The Valve,check, cataloged under National Stock Number 4820-00-489-8565, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is L3harris Technologies, Inc.. Government technical data includes 25 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-489-8565 |
| Primary Part Number | 58236-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | L3harris Technologies, Inc. |
| Status | ACTIVE |
| Flow Control Device | POPPETPOPPET |
| Connection Style | FLARED (TUBE) FIRST ENDFLARED (TUBE) FIRST END |
| Connection Style | FLARE (TUBE) SECOND ENDFLARE (TUBE) SECOND END |
| Mounting Position | HORIZONTAL OR HORIZONTAL OR VERTICALVERTICAL |
| Connection Type | THREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL TUBE SECOND ENDTHREADED INTERNAL TUBE SECOND END |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES SECOND END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND SECOND ENDRIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST ENDRIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES SECOND END0.750 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END0.750 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Maximum Operating Temp | 500.0 FAHRENHEIT SINGLE RESPONSE500.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRINGSPRING |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Thread Class | 3A FIRST END3A FIRST END A |
| Thread Class | 3B SECOND END3B SECOND END |
| Thread Quantity Per Inch | 16 FIRST END16 FIRST END |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKINGSTEEL COMP 303 BODY |
| Thread Series Designator | UNF SECOND END |
| Thread Series Designator | UNF SECOND ENDUNIFIED NATIONAL JOINT (UNJ) FIRST END |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| 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 |
|---|---|
| 58236-1 PRIMARY | L3harris Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 58236-1 | 5/9 Secondary reference U.S. Government activity |
| 446-8S2-6 | 5/9 Secondary reference U.S. Government activity |
| 249-T-8BT | 5/2 Secondary reference U.S. Government activity |
| 446-8SS2-6 | 5/9 Secondary reference U.S. Government activity |
| 58236-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-489-8565 is a Valve,check, manufactured by L3harris Technologies, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-489-8565 has 1 manufacturer part number on file: 58236-1 (L3harris Technologies, Inc.).
Key specifications for 58236-1: Flow Control Device: POPPETPOPPET; Connection Style: FLARED (TUBE) FIRST ENDFLARED (TUBE) FIRST END; Connection Style: FLARE (TUBE) SECOND ENDFLARE (TUBE) SECOND END; Mounting Position: HORIZONTAL OR HORIZONTAL OR VERTICALVERTICAL. 25 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.