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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) | 00-420-5485 (004205485) |
| NCB Code | USA (00) |
| Manufacturer | Circor Aerospace Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A 1ST END" |
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END" |
| ADQU | FLOW CONTROL DEVICE | POPPET" |
| ADSU | DISK LOADING METHOD | SPRING" |
| AEHZ | MAXIMUM OPERATING TEMP | 250.0 DEG FAHRENHEIT SINGLE RESPONSE" |
| AHNC | CONNECTION STYLE | EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END" |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC" |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL BOSS 1ST END" |
| CQCY | ADJUSTABLE PRESSURE RANGE | +10.0/+30.0 POUNDS PER SQUARE INCH" |
| CQGM | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE" |
| CQJX | NOMINAL THREAD SIZE | 0.437 INCHES 1ST END" |
| CSDC | OPENING PRESSURE SETTING | 25.0 POUNDS PER SQUARE INCH" |
| CWFD | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END" |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 BODY" |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 FLOW CONTROL DEVICE AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE" |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 SEAT" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,ALLOY 2024,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,ALLOY 2024,T4 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,ALLOY 2024,T4 FED SPEC SINGLE MATERIAL RESPONSE SEAT" |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | AMMONIA, GASEOUS 5TH RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON 2ND RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | HELIUM 3RD RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | HYDROGEN 4TH RESPONSE" |
| SFTT | SURFACE TREATMENT | ANODIZE" |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU W/BAFFLE" |
| THSD | THREAD SERIES DESIGNATOR | UNF 1ST END" |
| AAJD | THREAD CLASS | 3A 1ST END" |
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END" |
| ADQU | FLOW CONTROL DEVICE | POPPET" |
| ADSU | DISK LOADING METHOD | SPRING" |
| AEHZ | MAXIMUM OPERATING TEMP | 250.0 DEG FAHRENHEIT SINGLE RESPONSE" |
| AHNC | CONNECTION STYLE | EXTERNAL SEAT FOR GASKET SEAL (BOSS) 1ST END" |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC" |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL BOSS 1ST END" |
| CQCY | ADJUSTABLE PRESSURE RANGE | +10.0/+30.0 POUNDS PER SQUARE INCH" |
| CQGM | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE" |
| CQJX | NOMINAL THREAD SIZE | 0.437 INCHES 1ST END" |
| CSDC | OPENING PRESSURE SETTING | 25.0 POUNDS PER SQUARE INCH" |
| CWFD | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END" |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 BODY" |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 FLOW CONTROL DEVICE AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOW CONTROL DEVICE" |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 SEAT" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,ALLOY 2024,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,ALLOY 2024,T4 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE" |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,ALLOY 2024,T4 FED SPEC SINGLE MATERIAL RESPONSE SEAT" |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR 1ST RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | AMMONIA, GASEOUS 5TH RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | FUEL/OIL, HYDROCARBON 2ND RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | HELIUM 3RD RESPONSE" |
| MEDA | MEDIA FOR WHICH DESIGNED | HYDROGEN 4TH RESPONSE" |
| SFTT | SURFACE TREATMENT | ANODIZE" |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU W/BAFFLE" |
| THSD | THREAD SERIES DESIGNATOR | UNF 1ST END" |
| Relevant Components for NSN - 4820-00-420-5485, 4820004205485 | ||||
| 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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