VALVE,SAFETY RELIEF

4820FSC

01NCB code

618-5259Item number

NIIN 01-618-5259

Identification

THREAD CLASS	2
THREAD DIRECTION	FIRST END RIGHT-HAND
THREAD DIRECTION	SECOND END RIGHT-HAND
FLOW CONTROL DEVICE	DISK
BONNET TYPE	INSIDE SPRING
BONNET ATTACHMENT METHOD	THREADED
MAXIMUM OPERATING TEMP	SINGLE RESPONSE FAHRENHEIT 425.0
MINIMUM OPERATING TEMP	FAHRENHEIT -320.0
CONNECTION STYLE
VALVE OPERATION METHOD	AUTOMATIC
CONNECTION TYPE	FIRST END THREADED EXTERNAL PIPE
CONNECTION TYPE	SECOND END THREADED INTERNAL PIPE
VALVE SIZE	INCHES 0.75
THREAD QUANTITY PER INCH	18
ADJUSTABLE PRESSURE RANGE	POUNDS PER SQUARE INCH 3.0 TO 900.0
NOMINAL THREAD SIZE	FIRST END INCHES 0.75
NOMINAL THREAD SIZE	SECOND END INCHES 0.75
OPERATING PRESSURE	SINGLE RESPONSE POUNDS PER SQUARE INCH (PSI) MAXIMUM 900.0
SEAT ANGLE	ALL ENDS DEGREES 45.0
OPENING PRESSURE SETTING	POUNDS PER SQUARE INCH 300.0
SPECIAL FEATURES	FOR AIR/GAS SERVICE IAW ASME SECTION VIII; CRACKING PRESSURE ADJUSTMENT SCREW
MATERIAL	BODY BRONZE
MATERIAL	DISK STEEL CORROSION RESISTING
MATERIAL DOCUMENT AND CLASSIFICATION	BODY ASSN STD SINGLE MATERIAL RESPONSE AST- B584 AL 84400
MATERIAL DOCUMENT AND CLASSIFICATION	DISK ASSN STD SINGLE MATERIAL RESPONSE AST- A479-316
MEDIA FOR WHICH DESIGNED	FIRST RESPONSE AIR
MEDIA FOR WHICH DESIGNED	SECOND RESPONSE GAS, INERT
STYLE DESIGNATOR
THREAD SERIES DESIGNATOR	FIRST END NPT
THREAD SERIES DESIGNATOR	SECOND END NPT
FURNISHED ITEMS AND QUANTITY	LEVER 1

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