AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
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| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-844-7744 (008447744) |
| NCB Code | USA (00) |
| Manufacturer | Circor Aerospace Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AHNC | CONNECTION STYLE | PLAIN (PIPE) 1ST END |
| CQGM | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | ACETYLENE 2ND RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | AMMONIA,GASEOUS 3RD RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | REFRIGERANT 12 4TH RESPONSE |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY. |
| AAAR | NOMINAL PIPE SIZE ACCOMMODATED | 1.000 INCHES 1ST END |
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSU | DISK LOADING METHOD | SPRING |
| AEHZ | MAXIMUM OPERATING TEMP | -40.0 DEG FAHRENHEIT 1ST RESPONSE |
| AEHZ | MAXIMUM OPERATING TEMP | 250.0 DEG FAHRENHEIT 2ND RESPONSE |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL PIPE 1ST END |
| CBBL | FEATURES PROVIDED | VALVE STEM LOCK SHIELD AND BONNET PACKING AND PRESSURE TIGHT OUTLET SIDE |
| CQJX | NOMINAL THREAD SIZE | 1.000 INCHES 1ST END |
| CSDC | OPENING PRESSURE SETTING | 21.0 POUNDS PER SQUARE INCH |
| FEAT | SPECIAL FEATURES | POP-OFF TYPE |
| MATT | MATERIAL | STEEL COMP 303 OVERALL |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | HYDROGEN 5TH RESPONSE |
| THSD | THREAD SERIES DESIGNATOR | NPT 1ST END |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY PRE-SET SETTING |
| Relevant Components for NSN - 4820-00-844-7744, 4820008447744 | ||||
| 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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