| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-172-9123 (001729123) |
| NCB Code | USA (00) |
| Manufacturer | Ashcroft Inc, Dresser Industries Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADSR | BONNET TYPE | EXPOSED SPRING |
| ADST | BONNET ATTACHMENT METHOD | BOLTED |
| ADSU | DISK LOADING METHOD | SPRING |
| ADSY | VALVE DISCHARGE FLOW RATE | 54100.0 POUNDS PER HOUR |
| ADZH | RENEWABLE SEAT RING TYPE | THREADED |
| AECS | BOLT HOLE QUANTITY | 8 2ND END |
| AECS | BOLT HOLE QUANTITY | 9 1ST END |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES 1ST END |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES 2ND END |
| CBBL | FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |
| CCFG | VALVE SIZE | 2.500 INCHES |
| CSDC | OPENING PRESSURE SETTING | 647.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 7.500 INCHES 2ND END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 9.250 INCHES 1ST END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.812 INCHES 1ST END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.812 INCHES 2ND END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 5.875 INCHES 2ND END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 7.688 INCHES 1ST END |
| CWDF | FLANGE FACE DESIGN | PLAIN 2ND END |
| CWDF | FLANGE FACE DESIGN | RECESSED STRAIGHT 1ST END |
| CWDP | RECESS NOMINAL DIAMETER | 4.500 INCHES 1ST END |
| CWDS | RECESS NOMINAL DEPTH | 0.325 INCHES 1ST END |
| STYL | STYLE DESIGNATOR | ANGLE FLANGED ENDS |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENT |
| Components Related to NSN - 4820-00-172-9123, 4820001729123 | ||||
| 4820-01-572-7837 (4820015727837) | 4820-01-478-2496 (4820014782496) | 4810-01-232-8702 (4810012328702) | 4820-12-340-3271 (4820123403271) | |
| 4820-01-424-4726 (4820014244726) | 4820-00-428-7011 (4820004287011) | 4810-01-707-6012 (4810017076012) | 4820-01-671-9772 (4820016719772) | |
| 4820-00-034-1423 (4820000341423) | 4820-01-160-8232 (4820011608232) | 4820-00-032-4754 (4820000324754) | 4810-01-516-2099 (4810015162099) | |
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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