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NSN: 4820-00-001-7754
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Part Numbers

Item Number Item Description
P84-526 Valve, Check

Master Requirement Codes

Code Translation
AHNC The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.
AWLS Indicates the type of connection/s/.
ADSU The means of closing the item when inlet pressure decreases.
ADQU The part that controls the flow through the item.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
MATT The chemical compound or mechanical mixture properties of which the item is fabricated.
AEHZ The maximum temperature at which the item is rated to operate for an extended period of time.
CQGM The maximum pressure at which the item is rated for operation.
AEHZ The maximum temperature at which the item is rated to operate for an extended period of time.
MEDA The type of media for which the item is designed.
MEDA The type of media for which the item is designed.
BBJX The installed position for which the item is designed.
CQJX A designation that is used for the purpose of general identification of the thread.
STYL The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
AAJD A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
AAJF 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.
THSD A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
AQLR The means used to control the operation of the valve.

P84-526 Check Valve

Cage 91816

Technical Definition

Valve, Check, also referenced with federal logistics item name code 05487 - A valve permitting flow in one direction only. it does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. it may be inline or cartridge (manifold) design.

Technical Characteristics

Connection Style (AHNC):
External seat for gasket seal (boss) all ends
Connection Type (AWLS):
Threaded external boss all ends
Disk Loading Method (ADSU):
Spring
Flow Control Device (ADQU):
Poppet
Material (MATT):
Aluminum body
Material (MATT):
Plastic polytetrafluoroethylene packing or rubber packing
Maximum Operating Temp (AEHZ):
400.0 deg fahrenheit 2nd response
Maximum Operating Pressure (CQGM):
245.0 pounds per square inch single response
Maximum Operating Temp (AEHZ):
-40.0 deg fahrenheit 1st response
Media For Which Designed (MEDA):
Air 1st response
Media For Which Designed (MEDA):
Fuel/oil, hydrocarbon 2nd response
Mounting Position (BBJX):
Horizontal or vertical
Nominal Thread Size (CQJX):
0.562 inches all ends
Style Designator (STYL):
Straight thru
Thread Class (AAJD):
3a all ends
Thread Direction (AAJF):
Right-hand all ends
Thread Series Designator (THSD):
Unf all ends
Valve Operation Method (AQLR):
Automatic

National Stock Number (NSN)

4820-00-001-7754