NSN 4820-00-207-8821
Part Details | PRESSURE AND TEMPERATURE RELIEF VALVE
4820-00-207-8821 A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also VALVE, SAFETY RELIEF and VALVE, REGULATING. TEMPERATURE.
Alternate Parts: 540 12, 540 1-2, 4820-00-207-8821, 00-207-8821, 4820002078821, 002078821
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | APR 13, 1973 | 00-207-8821 | 16996 ( VALVE, RELIEF, PRESSURE AND TEMPERATURE ) |
REFERENCE DRAWINGS & PICTURES
ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS
SWIVEL NUT, FLARE
PLAIN
SWIVEL NUT, FLARE
PLAIN
SWIVEL NUT, FLARE
PLAIN
SWIVEL NUT, FLARE
PLAIN
Cross Reference | NSN 4820-00-207-8821
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 540 1-2 | 79227 | WATTS REGULATOR CO |
Technical Data | NSN 4820-00-207-8821
| Characteristic | Specifications |
|---|---|
| BODY STYLE | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| BODY MATERIAL | BRASS |
| SEAT MATERIAL | BRASS |
| FLOW CONTROL DEVICE | DISK, LIFT |
| FLOW CONTROL DEVICE MATERIAL | STEEL, CORROSION RESISTING |
| END CONNECTION QUANTITY | 2 |
| FIRST END CONNECTION TYPE | THREADED INTERNAL PIPE |
| FIRST END STYLE DESIGNATOR | 2 SWIVEL NUT, FLARE |
| FIRST END NOMINAL PIPE SIZE ACCOMMODATED | 0.500 INCHES |
| FIRST END THREAD DIRECTION | RIGHT-HAND |
| SECOND END RELATIONSHIP WITH FIRST END | NOT IDENTICAL |
| SECOND END CONNECTION TYPE | THREADED EXTERNAL PIPE |
| SECOND END STYLE DESIGNATOR | PLAIN |
| SECOND END NOMINAL PIPE SIZE ACCOMMODATED | 0.500 INCHES |
| SECOND END THREAD DIRECTION | RIGHT-HAND |
| TEMP ADJUSTABILITY | NOT ADJUSTABLE |
| MEDIA FOR WHICH DESIGNED | WATER, FRESH |
| TEMP RATING | 210.0 DEG FAHRENHEIT |
| BULB LENGTH | 4.000 INCHES NOMINAL |
| BULB DIAMETER | 0.812 INCHES NOMINAL |
| TEMP CONTROL DEVICE TYPE | FUSIBLE |
| OPENING PRESSURE SETTING | 175.0 POUNDS PER SQUARE INCH |
| ADJUSTABLE PRESSURE RANGE | +75.0 TO +175.0 POUNDS PER SQUARE INCH |
| SPECIAL FEATURES | TEMPERATURE WATER RATING AT 50000-BTU/HR |