4820-01-208-2789 VALVE,SAFETY RELIEF Index 4820-01-208-2791 VALVE,PLUG

National Stock Number:
4820-01-208-2790

Federal Supply Class:
4820

National Item Identification Number:
012082790

Description:
VALVE,RELIEF,PRESSURE AND TEMPER

Detail:
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.


Manufacturer Information:
012140679227WATTS REGULATOR CO
3/4 LF40L-3 150-21079227WATTS REGULATOR CO
40L-3 3/4IN-150PSI-3EXT79227WATTS REGULATOR CO
M12-3/4IN-150PSI-3EXT79227WATTS REGULATOR CO


Techincal Specification:
END CONNECTION QUANTITY2
ADJUSTABLE PRESSURE RANGE+75.0 TO 150.0 POUNDS PER SQUARE INCH
BODY MATERIALBRONZE
BODY STYLEANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS
FIRST END CONNECTION TYPETHREADED INTERNAL PIPE
FIRST END NOMINAL PIPE SIZE ACCOMMODATED0.750 INCHES
FIRST END NOMINAL THREAD SIZE0.750 INCHES
FIRST END THREAD DIRECTIONRIGHT-HAND
FIRST END THREAD CLASS3B
FIRST END THREAD SERIES DESIGNATORNPT
FIRST END STYLE DESIGNATORPLAIN
FLOW CONTROL DEVICEDISK, FLAT
MEDIA FOR WHICH DESIGNEDWATER, FRESH
OPENING PRESSURE SETTING100.0 POUNDS PER SQUARE INCH
SECOND END CONNECTION TYPETHREADED EXTERNAL PIPE
SECOND END THREAD CLASS3A
SECOND END THREAD DIRECTIONRIGHT-HAND
SECOND END THREAD SERIES DESIGNATORNPT
SECOND END NOMINAL PIPE SIZE ACCOMMODATED0.750 INCHES
SECOND END NOMINAL THREAD SIZE0.750 INCHES
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SECOND END STYLE DESIGNATORPLAIN
TEMP ADJUSTABILITYNOT ADJUSTABLE
TEMP RATING210.0 FAHRENHEIT
TEMP CONTROL DEVICE TYPETHERMOSTATIC


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