| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-252-4830 (002524830) |
| 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 | 59900.0 POUNDS PER HOUR |
| ADZH | RENEWABLE SEAT RING TYPE | THREADED |
| AECS | BOLT HOLE QUANTITY | 8 1ST END |
| AECS | BOLT HOLE QUANTITY | 9 2ND END |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES 1ST END |
| ARKN | FLANGE SHAPE | ROUND WITH HOLES 2ND END |
| AWLS | CONNECTION TYPE | FLANGE 1ST END |
| AWLS | CONNECTION TYPE | FLANGE 2ND END |
| CQCY | ADJUSTABLE PRESSURE RANGE | 1246.0 TO 1379.0 POUNDS PER SQUARE INCH |
| CSDC | OPENING PRESSURE SETTING | 1365.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 9.250 INCHES 2ND END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 9.625 INCHES 1ST END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 0.812 INCHES 2ND END |
| CWCQ | BOLT HOLE NOMINAL DIAMETER | 1.062 INCHES 1ST END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 7.500 INCHES 1ST END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 7.688 INCHES 2ND END |
| CWDF | FLANGE FACE DESIGN | PLAIN 1ST END |
| CWDF | FLANGE FACE DESIGN | PLAIN 2ND END |
| STYL | STYLE DESIGNATOR | ANGLE |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENT |
| Components Related to NSN - 4820-00-252-4830, 4820002524830 | ||||
| 4820-01-661-4388 (4820016614388) | 4820-01-145-6678 (4820011456678) | 4820-01-039-1836 (4820010391836) | 4820-01-386-1744 (4820013861744) | |
| 4810-01-271-8772 (4810012718772) | 4820-00-999-3603 (4820009993603) | 4820-01-212-9959 (4820012129959) | 4820-01-294-4352 (4820012944352) | |
| 4820-01-377-3064 (4820013773064) | 4820-01-394-1344 (4820013941344) | 4820-01-268-9843 (4820012689843) | 4820-01-500-8093 (4820015008093) | |
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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