| Item Name | Valve Check |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-268-8786 (002688786) |
| NCB Code | USA (00) |
| Manufacturer | National Instruments Corporation, Military Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | POPPET |
| AECS | BOLT HOLE QUANTITY | 6 ALL ENDS |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES ALL ENDS |
| AWLS | CONNECTION TYPE | FLANGE ALL ENDS |
| BBJX | MOUNTING POSITION | VERTICAL |
| CQGM | MAXIMUM OPERATING PRESSURE | 100.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CWCD | NOMINAL OUTSIDE DIAMETER | 6.125 INCHES ALL ENDS |
| CWCK | NOMINAL THICKNESS | 0.500 INCHES ALL ENDS |
| CWCL | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 6.000 INCHES |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.562 INCHES ALL ENDS |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 5.000 INCHES ALL ENDS |
| CWDF | FLANGE FACE DESIGN | PLAIN ALL ENDS |
| FEAT | SPECIAL FEATURES | BRONZE DISK,QQ-C-390,FACED W/NICKEL COPPER ALLOY,QQ-N-281 OR QQ-N-288 NOT LESS THAN 1/8 IN.THK |
| MATT | MATERIAL | COPPER ALLOY 903 BODY |
| MATT | MATERIAL | COPPER ALLOY 903 SEAT |
| MATT | MATERIAL | NICKEL ALLOY FLOW CONTROL DEVICE OR COPPER ALLOY FLOW CONTROL DEVICE |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390,ALLOY D5/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390,ALLOY D5/D/ FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC 1ST MATERIAL RESPONSE FLOW CONTROL DEVICE AND QQ-N-281 FED SPEC 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE AND QQ-N-288 FED SPEC 3RD MATERIAL RESPONSE FLOW CONTROL DEVICE |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | WATER,FRESH 2ND RESPONSE |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | B TYPE AND 1 CLASS |
| Components Related to NSN - 4820-00-268-8786, 4820002688786 | ||||
| 4820-01-661-4388 (4820016614388) | 4820-01-145-6678 (4820011456678) | 4820-01-039-1836 (4820010391836) | 4820-01-386-1744 (4820013861744) | |
| 4810-01-271-8772 (4810012718772) | 4820-00-999-3603 (4820009993603) | 4820-01-212-9959 (4820012129959) | 4820-01-294-4352 (4820012944352) | |
| 4820-01-377-3064 (4820013773064) | 4820-01-394-1344 (4820013941344) | 4820-01-268-9843 (4820012689843) | 4820-01-500-8093 (4820015008093) | |
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