| Item Name | Valve Check |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-052-3974 (010523974) |
| NCB Code | USA (01) |
| Manufacturer | Parker Hannifin Corporation, Teledyne Industries Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A ALL ENDS |
| AAJF | THREAD DIRECTION | RIGHT-HAND ALL ENDS |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| AEHZ | MAXIMUM OPERATING TEMP | 200.0 DEG FAHRENHEIT SINGLE RESPONSE |
| AHNC | CONNECTION STYLE | FLARED (TUBE) ALL ENDS |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL TUBE ALL ENDS |
| BBJX | MOUNTING POSITION | HORIZONTAL OR VERTICAL |
| CMLP | THREAD QUANTITY PER INCH | 20 ALL ENDS |
| CQGM | MAXIMUM OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CQJX | NOMINAL THREAD SIZE | 0.438 INCHES ALL ENDS |
| CQRB | SEAT ANGLE | 37.0 DEGREES ALL ENDS |
| FEAT | SPECIAL FEATURES | CRAKING PRESSURE 3.0 PSI |
| MATT | MATERIAL | ALUMINUM ALLOY 2017 BODY |
| MATT | MATERIAL | ALUMINUM ALLOY 2017 SEAT |
| MATT | MATERIAL | STEEL COMP 304 FLOW CONTROL DEVICE AND STEEL COMP 303 FLOW CONTROL DEVICE |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/5,ALLOY 2017,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/5,ALLOY 2017,T4 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CLASS 304 FED SPEC 1ST MATERIAL RESPONSE FLOW CONTROL DEVICE AND QQ-S-764,TYPE 303 FED SPEC 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID,MINERAL BASE 2ND RESPONSE |
| SFTT | SURFACE TREATMENT | ANODIZE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| THSD | THREAD SERIES DESIGNATOR | UNJ ALL ENDS |
| Components Related to NSN - 4820-01-052-3974, 4820010523974 | ||||
| 4820-01-168-7617 (4820011687617) | 4820-00-036-1739 (4820000361739) | 4820-01-148-9383 (4820011489383) | 4820-01-416-7529 (4820014167529) | |
| 4810-01-036-3133 (4810010363133) | 4820-01-365-7068 (4820013657068) | 4820-00-475-4247 (4820004754247) | 4820-01-192-5887 (4820011925887) | |
| 4820-01-546-7933 (4820015467933) | 4820-00-366-2438 (4820003662438) | 4820-01-066-6185 (4820010666185) | 4810-00-670-3476 (4810006703476) | |
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