| Item Name | Valve Regulating Temperature |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-499-2508 (014992508) |
| NCB Code | USA (01) |
| Manufacturer | Trac Regulators Inc, Military Specifications |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 40735-4 ASSY 40735-401 | trac regulators inc | valve regulating temperature | 55378 | RFQ |
| 40735-401 | trac regulators inc | valve regulating temperature | 55378 | RFQ |
| MIL-DTL-19772 | military specifications | valve regulating temperature | 81349 | RFQ |
| MIL-V-19772 | military specifications | valve regulating temperature | 81349 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAFZ | BODY MATERIAL | BRONZE, ASTM B61 |
| AAQL | BODY STYLE | STRAIGHT THRU |
| ABEP | STEM MATERIAL | STEEL, CORROSION RESISTING, QQ-S-763, CLASS 302, 303, 304, 305, 310, OR 316 |
| ABFF | FURNISHED ITEMS | TAILPIECE W/GROOVES AND UNION NUT |
| ACKM | FIRST END CONNECTION TYPE | UNTHREADED INTERNAL TUBE |
| ACKN | FIRST END STYLE DESIGNATOR | SOCKET W/BRAZING RING |
| ACLH | FIRST END OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.500 INCHES NOMINAL |
| ACLR | SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| ACSH | SEAT MATERIAL | BRONZE, ASTM B61 |
| ADQL | FACE TO FACE DISTANCE | 6.000 INCHES NOMINAL |
| ADQT | PACKING MATERIAL | PLASTIC, POLYPROPYLENE |
| ADQU | FLOW CONTROL DEVICE | PLUNGER WITH 2 DISKS |
| ADQV | FLOW CONTROL DEVICE MATERIAL | STEEL, CORROSION RESISTING, QQ-S-763, CLASS 302, 303, 304, 305, 310, OR 316 |
| ADQZ | END CONNECTION QUANTITY | 2 |
| AEVM | TWO-WAY VALVE ACTION | REVERSE ACTING |
| AEVT | CAPILLARY TUBE LENGTH | 12.000 INCHES NOMINAL |
| AEVV | BULB DIAMETER | 1.875 INCHES NOMINAL |
| AEVX | TEMP ADJUSTABILITY | ADJUSTABLE |
| AEWJ | THERMOSTATIC ELEMENT | LIQUID IMMERSION TYPE |
| AZKQ | TEMP RATING | 60.0 DEG FAHRENHEIT MINIMUM AND 160.0 DEG FAHRENHEIT MAXIMUM |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | 1/2 INCH STYLE A FAILSAFE DOUBLE SEAT REVERSE ACTING THERMOSTATIC TEMPERATURE REGULATOR VALVE ASSEMBLY. |
| FEAT | SPECIAL FEATURES | GTHIS VALVE IS TYPE II DIRECT ACTING CLASS 2 REVERSE ACTING SERIES 250 VALVE IAW MIL DTL-19772. SHOCK AND VIBRATION APPROVAL BY EXTENSION FOR LIGHT WEIGHT GRADE A CLASS I FLEXIBLE MOUNTING FIXTURE 4A. |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | PE II, CLASS 2 TYPE |
| Relevant Components for NSN - 4820-01-499-2508, 4820014992508 | ||||
| 4820-01-695-0145 (4820016950145) | 4820-01-596-1771 (4820015961771) | 4810-01-187-3363 (4810011873363) | 4810-01-523-6894 (4810015236894) | |
| 4820-00-707-0356 (4820007070356) | 4820-01-568-0815 (4820015680815) | 4820-01-227-9365 (4820012279365) | 4820-01-104-8145 (4820011048145) | |
| 4820-01-299-5713 (4820012995713) | 4820-01-640-9566 (4820016409566) | 4810-01-346-0666 (4810013460666) | 4820-01-655-5932 (4820016555932) | |
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