The Valve,check, cataloged under National Stock Number 4820-00-986-6983, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-986-6983 |
| Primary Part Number | 143136 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Renewable Seat Ring Type | PRESSED-IN |
| Flange Face Design | PLAIN FIRST END |
| Nominal Length | 5.000 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL |
| Supplementary Features | FLOW CONTROL DEVICE: DIAPHRAGM |
| Connection Type | FLANGE SECOND END |
| Connection Type | FLANGE FIRST END |
| Bolt Hole Nominal Diameter | 0.7965 INCHES FIRST END IN |
| Operating Pressure | 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 130.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 3.625 INCHES FIRST END IN |
| Mounting Facility | THREADED FASTENER |
| Nominal Width | 5.000 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 3.625 INCHES FIRST END IN |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | STEEL BODY |
| Material | RUBBER FLOW CONTROL DEVICE |
| Material | RUBBER SEAT |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 2.7185 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 |
|---|---|
| 143136 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| 10922174 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 4820009866983 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 4820-00-986-6983 is a Valve,check, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-986-6983 has 2 manufacturer part numbers on file: 143136 (Eaton Aerospace, Llc Dba Jackson South), 10922174 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 143136: Flange Shape: RECTANGULAR WITH HOLES FIRST END; Renewable Seat Ring Type: PRESSED-IN; Flange Face Design: PLAIN FIRST END; Nominal Length: 5.000 INCHES FIRST END IN. 21 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.