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| Item Name | Valve Regulating Fluid Pressure |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-171-9821 (001719821) |
| NCB Code | USA (00) |
| Manufacturer | Victor Equipment Co, Military Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAQL | BODY STYLE | STRAIGHT THRU |
| ABEP | STEM MATERIAL | BRASS |
| ABFF | FURNISHED ITEMS | AUTOMATIC RELIEF VALVE AND CYLINDER GAGE AND DELIVERY GAGE AND INDICATOR |
| ACKL | MEDIA FOR WHICH DESIGNED | HYDROGEN |
| ACKM | FIRST END CONNECTION TYPE | THREADED INTERNAL GAS CYLINDER |
| ACKN | FIRST END STYLE DESIGNATOR | SWIVEL NUT,GAS |
| ACLJ | FIRST END THREAD SIZE AND SERIES/TYPE DESIGNATOR | 0.830-14 NGO |
| ACLL | FIRST END THREAD DIRECTION | LEFT-HAND |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| ACLS | SECOND END CONNECTION TYPE | THREADED EXTERNAL TUBE |
| ACLT | SECOND END STYLE DESIGNATOR | FLARELESS |
| ACMP | SECOND END OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.562 INCHES NOMINAL |
| ACMQ | SECOND END THREAD SIZE AND SERIES/TYPE DESIGNATOR | 9/16-18 UNF |
| ACMR | SECOND END THREAD CLASS | 3A |
| ACMS | SECOND END THREAD DIRECTION | LEFT-HAND |
| ACSH | SEAT MATERIAL | BRASS |
| ADQU | FLOW CONTROL DEVICE | DIAPHRAGM |
| ADQV | FLOW CONTROL DEVICE MATERIAL | RUBBER,CHLOROPRENE |
| ADQZ | END CONNECTION QUANTITY | 2 |
| ADRN | FIRST END THREAD PITCH DIAMETERS | 0.7750 TO 0.7786 INCHES |
| AEVN | REGULATION TYPE | MANUAL SINGLE STAGE |
| AEVP | MANUAL CONTROL METHOD | LEVER |
| AEVR | VALVE LOADING METHOD | WEIGHT |
| AEVZ | MAXIMUM INLET PRESSURE RATING | 1600.0 POUNDS PER SQUARE INCH |
| AEWF | FILTER | NOT INCLUDED |
| MATT | MATERIAL | COPPER ALLOY BODY |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND H1 CLASS |
| ZZZX | DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BY THE DIAL RANGE |
| Relevant Components for NSN - 4820-00-171-9821, 4820001719821 | ||||
| 4810-01-693-0546 (4810016930546) | 4810-01-224-8636 (4810012248636) | 4810-00-181-8826 (4810001818826) | 4810-00-533-2538 (4810005332538) | |
| 4820-01-319-3454 (4820013193454) | 4820-01-154-9733 (4820011549733) | 4810-01-176-9496 (4810011769496) | 4820-01-278-5449 (4820012785449) | |
| 4810-01-152-7681 (4810011527681) | 4810-00-127-2787 (4810001272787) | 4820-00-557-7800 (4820005577800) | 4810-01-469-1460 (4810014691460) | |
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