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| Item Name | Valve Relief Pressure And Temper |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-646-5998 (016465998) |
| NCB Code | USA (01) |
| Manufacturer | Bell Helicopter Textron Inc, Actronics Incorporated, Ametek Thermal Systems Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJP | OUTSIDE SURFACE TREATMENT | ANODIZED, MIL-A-8625, TYPE 2 |
| ACKL | MEDIA FOR WHICH DESIGNED | OIL |
| ACKW | FIRST END FLANGE WIDTH | 0.875 INCHES NOMINAL |
| ACSH | SEAT MATERIAL | ALUMINUM ALLOY, QQ-A-200/8, ALLOY 6061, T6 |
| ADQU | FLOW CONTROL DEVICE | STEM AND INTEGRAL DISK |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | VALVE BYPASS HYDR; VALVE, BYPASS THERMAL AND PRESSURE |
| FEAT | SPECIAL FEATURES | FULLY OPEN: 165 DEG AND BELOW; STARTS TO CLOSE: 165-180 DEG; FULLY CLOSED: 180 DEG; FLUID: MIL-H-83282; VALVE CRACKING PRESSURE: 40 PSID MAX, AT 190-195 DEG F; VALVE TO RESEAT AT 30 PSID MIN |
| ACLA | FIRST END BOLT HOLE DIAMETER | 0.221 INCHES NOMINAL |
| ACLT | SECOND END STYLE DESIGNATOR | GROOVED |
| ACKV | FIRST END FLANGE LENGTH | 1.812 INCHES NOMINAL |
| ACKZ | FIRST END BOLT HOLE QUANTITY | 2 |
| ACKT | FIRST END FLANGE SHAPE STYLE | OVAL W/ BOLT HOLES |
| ACKU | FIRST END FLANGE THICKNESS | 0.125 INCHES NOMINAL |
| ACKX | FIRST END FLANGE END RADIUS | 0.250 INCHES NOMINAL |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| ADAR | BODY OUTSIDE DIAMETER | 0.798 INCHES NOMINAL |
| AFKX | TEMP CONTROL DEVICE TYPE | THERMOSTATIC |
| AFLN | FIRST END CENTER TO CENTER DISTANCE BETWEEN HOLES ALONG LENGTH | 1.312 INCHES NOMINAL |
| AAQL | BODY STYLE | STRAIGHT THRU |
| ABEP | STEM MATERIAL | ALUMINUM ALLOY, QQ-A-200/8, ALLOY 6061, T6 |
| AAFZ | BODY MATERIAL | ALUMINUM ALLOY, QQ-A-200/8, ALLOY 6061, T6 |
| ABJH | TEMP RATING | -65.0 DEG FAHRENHEIT AND 320.0 DEG FAHRENHEIT |
| Relevant Components for NSN - 4820-01-646-5998, 4820016465998 | ||||
| 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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