| Item Name | Valve Safety Relief |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-784-6687 (007846687) |
| NCB Code | USA (00) |
| Manufacturer | Entwistle Co The, Valcor Engineering Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A 1ST END |
| AAJF | THREAD DIRECTION | RIGHT-HAND 1ST END |
| ADQU | FLOW CONTROL DEVICE | POPPET |
| ADSY | VALVE DISCHARGE FLOW RATE | 28.0 CUBIC FEET PER MINUTE |
| AEHZ | MAXIMUM OPERATING TEMP | 140.0 DEG FAHRENHEIT SINGLE RESPONSE |
| AQLR | VALVE OPERATION METHOD | AUTOMATIC |
| AWLS | CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END |
| CQGM | MAXIMUM OPERATING PRESSURE | 280.0 POUNDS PER SQUARE INCH SINGLE RESPONSE |
| CQRB | SEAT ANGLE | 37.0 DEGREES 1ST END |
| CSDC | OPENING PRESSURE SETTING | 255.0 POUNDS PER SQUARE INCH |
| MATT | MATERIAL | ALUMINUM ALLOY BODY |
| MATT | MATERIAL | ALUMINUM ALLOY SEAT |
| MEDA | MEDIA FOR WHICH DESIGNED | AIR SINGLE RESPONSE |
| THSD | THREAD SERIES DESIGNATOR | UNF 1ST END |
| ADSR | BONNET TYPE | PACKING RETAINING |
| ADSU | DISK LOADING METHOD | SPRING |
| AHNC | CONNECTION STYLE | FLARED (TUBE) 1ST END |
| CMLP | THREAD QUANTITY PER INCH | 20 1ST END |
| CQJX | NOMINAL THREAD SIZE | 0.437 INCHES 1ST END |
| CWFD | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END |
| STYL | STYLE DESIGNATOR | STRAIGHT THRU |
| Relevant Components for NSN - 4820-00-784-6687, 4820007846687 | ||||
| 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) | |
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