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Part Numbers

Item Number Item Description
2C8140-4 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.
MDCL The specification, standard, or manufacturers reference, and the classification designation, such as class, condition, temper, and the like, that identifies the material.
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.
CQGM The maximum pressure at which the item is rated for operation.
MEDA The type of media for which the item is designed.
AZGM The facility for mounting the item.
BBJX The installed position for which the item is designed.
CWFD The nominal length of a straight line which passes through the center of the accommodated tube, and terminates at the outside circumference.
CQJX A designation that is used for the purpose of general identification of the thread.
MDCL The specification, standard, or manufacturers reference, and the classification designation, such as class, condition, temper, and the like, that identifies the material.
CQRB The angle of the end surface upon which the mated surface seats.
STYL The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
STDC The specification, standard, or manufacturers reference, and the classification designation, such as type, class, grade, and the like, that identifies the surface treatment material.
SFTT The metallic, nonmetallic, and/or chemical properties with which the item is plated, dipped, and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
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.
CMLP The number of threads on the item per linear inch measured on a line parallel to the thread axis.
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.

2C8140-4 Check Valve

Cage 99240

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):
Flared (tube) all ends
Connection Type (AWLS):
Threaded external tube all ends
Disk Loading Method (ADSU):
Spring
Flow Control Device (ADQU):
Poppet
Material Document And Classification (MDCL):
Qq-s-763 class 4400 fed spec single material response flow control device
Material (MATT):
Aluminum alloy seat
Material (MATT):
Steel flow control device
Maximum Operating Pressure (CQGM):
3000.0 pounds per square inch single response
Media For Which Designed (MEDA):
Oil, hydraulic single response
Mounting Facility (AZGM):
Bulkhead
Mounting Position (BBJX):
Horizontal or vertical
Nominal Outside Diameter Tube Accommodated (CWFD):
0.250 inches all ends
Nominal Thread Size (CQJX):
0.438 inches all ends
Material Document And Classification (MDCL):
Qq-a-267, alloy 2024, t351 fed spec single material response seat
Seat Angle (CQRB):
37.0 degrees all ends
Style Designator (STYL):
Straight thru
Surface Treatment Document And Classification (STDC):
Mil-a-8625,ty 2 mil spec single treatment response
Surface Treatment (SFTT):
Anodize
Thread Class (AAJD):
3a all ends
Thread Direction (AAJF):
Right-hand all ends
Thread Quantity Per Inch (CMLP):
20 all ends
Thread Series Designator (THSD):
Unf 1st end
Valve Operation Method (AQLR):
Automatic

National Stock Number (NSN)

4820-00-001-6159