The Valve,check, cataloged under National Stock Number 4820-00-497-8129, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. Government technical data includes 29 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-497-8129 |
| Primary Part Number | 6100X6 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| Status | ACTIVE |
| Flow Control Device | BALLBALL |
| Nominal Pipe Size Accommodated | 0.250 INCHES SECOND END0.250 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.250 INCHES FIRST END0.250 INCHES FIRST END IN |
| Connection Style | PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST ENDPLAIN, OPTIONAL END (PIPE) FIRST END |
| Mounting Position | HORIZONTAL OR HORIZONTAL OR VERTICALVERTICAL |
| Connection Type | THREADED EXTERNAL PIPE SECOND ENDTHREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST ENDTHREADED INTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | FED STD 66,AISI 302/SAE 30302 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | FED STD 66,AISI 302/SAE 30302 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICEFED STD 66,AISI 303/ FED STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | FED STD 66,AISI 303/ FED STD SINGLE MATERIAL RESPONSE SEATFED STD 66,AISI 303/SAE 30303 FED STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 5000.0 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 | 0.250 INCHES SECOND END0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.250 INCHES FIRST END0.250 INCHES FIRST END IN |
| Maximum Operating Temp | -40.0 FAHRENHEIT FIRST RESPONSE-40.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | 200.0 FAHRENHEIT SECOND RESPONSE200.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Disk Loading Method | SPRINGSPRING |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Thread Quantity Per Inch | 18 FIRST END18 FIRST END |
| Thread Quantity Per Inch | 18 SECOND END18 SECOND END |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL COMP 303 SEATSTEEL COMP 303 BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICESTEEL COMP 303 SEAT |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT SECOND ENDNPT 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 |
|---|---|
| 6100X6 PRIMARY | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
| W96182 | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| W96182 | 5/9 Secondary reference U.S. Government activity |
| W96182 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| W96182 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 4820-00-497-8129 is a Valve,check, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-497-8129 has 2 manufacturer part numbers on file: 6100X6 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), W96182 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
Key specifications for 6100X6: Flow Control Device: BALLBALL; Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END0.250 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END0.250 INCHES FIRST END IN; Connection Style: PLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END. 29 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.