The Valve,check, cataloged under National Stock Number 4820-01-238-6979, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Haskel International, Llc Dba Haskel International, Llc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-238-6979 |
| Primary Part Number | 28689-3 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Haskel International, Llc Dba Haskel International, Llc |
| Status | ACTIVE |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Style | PLAIN, OPTIONAL END (PIPE) SECOND END |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Series Designator | NPT SECOND END |
| Style Designator | STRAIGHT THRU |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Thread Series Designator | NPT FIRST END |
| Flow Control Device | BALL |
| Thread Direction | RIGHT-HAND SECOND END |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-238-6979 is a Valve,check, manufactured by Haskel International, Llc Dba Haskel International, Llc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-238-6979 has 2 cross-referenced part numbers: 28689-3 (Haskel International, Llc Dba Haskel International, Llc), 51238 (Haskel International, Llc Dba Haskel International, Llc).
There are 9 known substitutes for 4820-01-238-6979: 5940-00-504-4703, 6105-00-575-1211, 4920-00-838-6215 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 28689-3: Connection Type: THREADED EXTERNAL PIPE FIRST END; Material: STEEL CORROSION RESISTING OVERALL; Connection Style: PLAIN (PIPE) FIRST END; Connection Style: PLAIN, OPTIONAL END (PIPE) SECOND END. 16 total characteristics are documented in the Federal Logistics Information System.