| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-168-3939 (001683939) |
| NCB Code | USA (00) |
| Manufacturer | Dresser Industries Inc, Pentair Valves And Controls |
| 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 | 21000.0 POUNDS PER HOUR |
| ADZH | RENEWABLE SEAT RING TYPE | THREADED |
| AECS | BOLT HOLE QUANTITY | 4 1ST END |
| AECS | BOLT HOLE QUANTITY | 8 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 |
| CBBL | FEATURES PROVIDED | PRESSURE TIGHT OUTLET SIDE |
| CCFG | VALVE SIZE | 1.500 INCHES |
| CSDC | OPENING PRESSURE SETTING | 1375.0 POUNDS PER SQUARE INCH |
| CWCD | NOMINAL OUTSIDE DIAMETER | 7.000 INCHES 1ST END |
| CWCD | NOMINAL OUTSIDE DIAMETER | 7.562 INCHES 2ND 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 | 4.875 INCHES 1ST END |
| CWCT | BOLT CIRCLE NOMINAL DIAMETER | 6.000 INCHES 2ND END |
| CWDF | FLANGE FACE DESIGN | PLAIN 2ND END |
| CWDF | FLANGE FACE DESIGN | RECESSED STRAIGHT 1ST END |
| CWDP | RECESS NOMINAL DIAMETER | 2.250 INCHES 1ST END |
| CWDS | RECESS NOMINAL DEPTH | 0.125 INCHES 1ST END |
| STYL | STYLE DESIGNATOR | ANGLE FLANGED ENDS |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY THE VALVE DISCHARGE FLOW RATE REQUIREMENT |
| Relevant Components for NSN - 4820-00-168-3939, 4820001683939 | ||||
| 4820-01-396-8269 (4820013968269) | 4820-01-394-6183 (4820013946183) | 4820-00-971-1986 (4820009711986) | 4820-01-631-7474 (4820016317474) | |
| 4810-01-315-8174 (4810013158174) | 4820-01-045-1164 (4820010451164) | 4820-01-169-9733 (4820011699733) | 4820-01-233-9010 (4820012339010) | |
| 4820-01-169-8577 (4820011698577) | 4820-01-130-1407 (4820011301407) | 4810-01-641-9373 (4810016419373) | 4820-01-646-8601 (4820016468601) | |
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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