The Valve,check, cataloged under National Stock Number 4820-00-989-2230, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Abd Intl Inc Dba Abdick. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-989-2230 |
| Primary Part Number | 202141 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Abd Intl Inc Dba Abdick |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Nominal Pipe Size Accommodated | 0.125 INCHES ALL ENDS IN |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.125 INCHES ALL ENDS IN |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Media for Which Designed | HYDROGEN THIRD RESPONSE |
| Media for Which Designed | HELIUM SECOND RESPONSE |
| Media for Which Designed | AIR FIRST RESPONSE |
| Media for Which Designed | NITROGEN, GASEOUS FOURTH RESPONSE |
| Media for Which Designed | HYDRAULIC FLUID, MINERAL BASE FIFTH RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 202141 | Abd Intl Inc Dba Abdick (USA) |
| 038-001A041 | National Fluid Seperators Dba National Fluid Separators (USA) |
| Reference | Meaning |
|---|---|
| 2259B1MM | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-989-2230 is a Valve,check, manufactured by Abd Intl Inc Dba Abdick, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-989-2230 has 2 manufacturer part numbers on file: 202141 (Abd Intl Inc Dba Abdick), 038-001A041 (National Fluid Seperators Dba National Fluid Separators).
3 possible matches (shared part number, not a government interchangeability claim): 2990-01-241-0880, 4820-01-486-6003, 2945-01-723-9083. Verify interchangeability with system specifications before substitution.
Key specifications for 202141: Flow Control Device: POPPET; Nominal Pipe Size Accommodated: 0.125 INCHES ALL ENDS IN; Connection Style: PLAIN (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL. 20 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.