Part Number 174A

Safety Relief Valve

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Part Number
DEMIL
Shelf Life
UOM
NIIN
Part:
174a
Demil:
No
Shelf Life:
UOM:
NIIN:
009597299

Part Information
W/diaphragm seal of bonnet cavity

NSN
National Stock Number:
4820-00-959-7299 4820009597299
TXT
Description:
Safety Relief Valve
INC
INC
Item Name Code:
05488
MRC:
A measurement of the pipe size the item will accommodate.AAAR
Pipe Size Accommodated:
2.000 inches 1st end
MRC:
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.AAJF
Thread Direction:
Right-hand all ends
MRC:
The part that controls the flow through the item.ADQU
Flow Control Device:
Disk
MRC:
Indicates the type of housing on the item that accommodates the stem packing or spring.ADSR
Bonnet Type:
Inside spring
MRC:
The means by which the bonnet is attached to the item.ADST
Bonnet Attachment Method:
Bolted
MRC:
The means of closing the item when inlet pressure decreases.ADSU
Disk Loading Method:
Spring
MRC:
The maximum temperature at which the item is rated to operate for an extended period of time.AEHZ
Maximum Operating Temp:
250.0 degrees fahrenheit single response
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.AHNC
Connection Style:
G9 plain, optional en (pipe) all ends
MRC:
The means used to control the operation of the valve.AQLR
Valve Operation Method:
Automatic or manual
MRC:
Indicates the type of connection/s/.AWLS
Connection Type:
Threaded internal pipe all ends
MRC:
Those features,not otherwise specified,which may be required for proper functioning of the item.CBBL
Features Provided:
Valve stem lock shield and bonnet packing
MRC:
The maximum pressure at which the item is rated for operation.CQGM
Maximum Operating Pressure:
160.0 pounds per square inch single response
MRC:
A designation that is used for the purpose of general identification of the thread.CQJX
Thread Size:
2.000 inches all ends
MRC:
The predetermined pressure at which the item is calibrated to open.CSDC
Opening Pressure Setting:
30.0 pounds per square inch
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Copper alloy stem
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Copper alloy 836 body
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Copper alloy 836 flow control device or rubber silicone class q flow control device
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Copper alloy 836 seat
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Qq-c-390, alloy b5/d federal specification 1st material response flow control device
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Qq-c-390, alloy b5/d federal specification single material response body
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Qq-c-390, alloy b5/d federal specification single material response seat
MRC:
The type of media for which the item is designed.MEDA
Media For Which Designed:
Steam 1st response
MRC:
The type of media for which the item is designed.MEDA
Media For Which Designed:
Water, fresh 2nd response
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.STYL
Style Designator:
Err-090
MRC:
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.THSD
Thread Series Designator:
Npt all ends

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