| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-147-4951 (011474951) |
| NCB Code | USA (01) |
| Manufacturer | Circor Aerospace Inc, Northrop Grumman Systems Corporation |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 537A-4D-12 | circor aerospace inc | valve safety relief | 91816 | RFQ |
| 577A-4D-12 | circor aerospace inc | valve safety relief | 91816 | RFQ |
| GV500HW4A12-37 | northrop grumman systems corporation | valve safety relief | 26512 | RFQ |
| GV500HW4A12-77 | northrop grumman systems corporation | valve safety relief | 26512 | RFQ |
| 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 | GASKET SEAL (TUBE) 1ST END |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END |
| CQGM | MAXIMUM OPERATING PRESSURE | 200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CQJX | NOMINAL THREAD SIZE | 0.438 INCHES 1ST END |
| CSDC | OPENING PRESSURE SETTING | 12.0 POUNDS PER SQUARE INCH |
| MATT | MATERIAL | ALUMINUM ALLOY 2024 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MEDA | MEDIA FOR WHICH DESIGNED | AMMONIA,GASEOUS 3RD RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | FUEL/OIL,HYDROCARBON 2ND RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | GAS,INERT 1ST RESPONSE |
| MEDA | MEDIA FOR WHICH DESIGNED | HYDROGEN 4TH RESPONSE |
| SFTT | SURFACE TREATMENT | ANODIZE |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| THSD | THREAD SERIES DESIGNATOR | UNF 1ST END |
| Relevant Components for NSN - 4820-01-147-4951, 4820011474951 | ||||
| 4820-01-680-0758 (4820016800758) | 4820-01-143-5485 (4820011435485) | 4820-00-055-1456 (4820000551456) | 4820-01-064-7247 (4820010647247) | |
| 4820-01-659-8956 (4820016598956) | 4820-00-950-5912 (4820009505912) | 4820-01-070-5428 (4820010705428) | 4820-01-390-2772 (4820013902772) | |
| 4820-01-117-0449 (4820011170449) | 4820-01-013-4639 (4820010134639) | 4820-01-360-4401 (4820013604401) | 4810-01-666-7132 (4810016667132) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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