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NSN: 4820-00-001-6204
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Part Numbers

Item Number Item Description
1LL22F3-40S Valve, Regulating, Fluid Pressure
2404-004 Valve, Regulating, Fluid Pressure

Master Requirement Codes

Code Translation
ADQZ The number of end connections included in the item.
AAFZ The basic material of which the body is fabricated.
AAQL The style designation indicating the configuration that most nearly corresponds to the appearance of the body.
ADQR The center to center distance.
ABFF Items furnished as accessories which are not specified elsewhere.
AEWF An indication of whether or not a filter is included.
ACKM A narrative description of the type of end connection.
ACKN The style designation indicating the configuration that most nearly corresponds to the appearance of the end.
ACLL 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.
ACLJ Designates the thread diameter, series/type, and number of threads per specific measurement scale.
ADQV The element, compound, or mixture of which the flow control device is fabricated.
ADQU The part that controls the flow through the item.
ACPE Indicates whether or not the fourth end is identical with the first, second, or third end.
AEVZ The maximum pressure of the media on the inlet side at which an item is designed to operate.
ACKL The type of service with which the item is designed to be used.
ADZJ The means other than the end connection/s/ by which the item may be mounted.
AEVA The minimum to maximum limits of outlet pressure of the item.
AEWA The set /nonadjustable/ pressure of the media on the outlet side.
AAJP Consists of plating, dip, and/or coating that cannot be wiped off. plating and/or coating is any chemical and/or metallic additive, electrochemical, or mild mechanical process which protects the outside surface.
AEVP The means used to manually adjust the item.
AEVN Indicates the basic design type used for regulating the item.
ADZH Indicates the type of renewable seating ring in the item.
ACSH The element, compound, or mixture of which the seating surfaces are fabricated.
ACLR Indicates whether or not the second end is identical to the first end.
ABEP The element, compound, or mixture of which the stem is fabricated, excluding any surface treatment.
AZKQ A value which expresses the degree of heat or cold as applied to the operation, or limitation of operation, of an item.
ACMX Indicates whether or not the third end is identical with first or second end.
AEVR The means of providing resistance to the media passing through a valve, whereby the valve is actuated to regulate the flow.
AEVQ The seat design of the valve stem.

2404-004 Fluid Pressure Regulating Valve

Cage 00124

Technical Definition

Valve, Regulating, Fluid Pressure, also referenced with federal logistics item name code 27565 - A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. it is designed for use with compressed gas(es) and various liquids and may include gauges. it may be inline or cartridge (manifold) design. excludes regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.

Technical Characteristics

End Connection Quantity (ADQZ):
Body Material (AAFZ):
Aluminum alloy
Body Style (AAQL):
Straight thru
Center To Center Distance (ADQR):
1.688 inches nominal
Furnished Items (ABFF):
Adjustment stem
Filter (AEWF):
Not included
First End Connection Type (ACKM):
Threaded internal pipe
First End Style Designator (ACKN):
First End Thread Direction (ACLL):
First End Thread Size And Series/type Designator (ACLJ):
0.375-18 npt
Flow Control Device Material (ADQV):
Flow Control Device (ADQU):
Piston, free type
Fourth End Relationship With Preceding Ends (ACPE):
Identical with first end
Maximum Inlet Pressure Rating (AEVZ):
4000.0 pounds per square inch
Media For Which Designed (ACKL):
Mounting Facility (ADZJ):
Outlet Pressure Range (AEVA):
+1000.0/+4000.0 pounds per square inch
Outlet Pressure Setting (AEWA):
2500.0 pounds per square inch
Outside Surface Treatment (AAJP):
Manual Control Method (AEVP):
Regulation Type (AEVN):
Manual, double stage
Renewable Seat Ring Type (ADZH):
Seat Material (ACSH):
Rubber, buna-n
Second End Relationship With First End (ACLR):
Stem Material (ABEP):
Temp Rating (AZKQ):
200.0 deg fahrenheit nominal
Third End Relationship With Preceding Ends (ACMX):
Identical with first end
Valve Loading Method (AEVR):
Valve Stem Design (AEVQ):
Single seat

National Stock Number (NSN)