AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Valve Regulating System Pressure |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-291-8539 (012918539) |
| NCB Code | USA (01) |
| Manufacturer | Griswold Industries Co |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAFZ | BODY MATERIAL | BRONZE,MIL-B-16541 |
| AAQL | BODY STYLE | STRAIGHT THRU |
| ACKM | FIRST END CONNECTION TYPE | PLAIN FACE FLANGE |
| ACKN | FIRST END STYLE DESIGNATOR | PLAIN |
| ACKT | FIRST END FLANGE SHAPE STYLE | ROUND W/ BOLT HOLES |
| ACKU | FIRST END FLANGE THICKNESS | 1.310 INCHES MINIMUM |
| ACKZ | FIRST END BOLT HOLE QUANTITY | 14 |
| ACLA | FIRST END BOLT HOLE DIAMETER | 0.688 INCHES NOMINAL |
| ACLB | FIRST END BOLT CIRCLE DIAMETER | 11.062 INCHES NOMINAL |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| ADQL | FACE TO FACE DISTANCE | 25.790 INCHES NOMINAL |
| ADQU | FLOW CONTROL DEVICE | DISK |
| ADQZ | END CONNECTION QUANTITY | 2 |
| Relevant Components for NSN - 4820-01-291-8539, 4820012918539 | ||||
| 4810-01-693-0546 (4810016930546) | 4810-01-224-8636 (4810012248636) | 4810-00-181-8826 (4810001818826) | 4810-00-533-2538 (4810005332538) | |
| 4820-01-319-3454 (4820013193454) | 4820-01-154-9733 (4820011549733) | 4810-01-176-9496 (4810011769496) | 4820-01-278-5449 (4820012785449) | |
| 4810-01-152-7681 (4810011527681) | 4810-00-127-2787 (4810001272787) | 4820-00-557-7800 (4820005577800) | 4810-01-469-1460 (4810014691460) | |
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