Restrictor Check Valve
633757
(NSN) National Stock Number
4820-00-640-5635
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
20520
Schedule B Code
8481309000
Summary
1.000 inches 2nd end nominal pipe size accommodated, 3a 1st end thread class, right-hand 1st end thread direction, right-hand 2nd end thread direction, 0.040 inches nominal aperture diameter, disk flow control device
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 6 | - | - | 5 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | ZZ |
Identification
A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.
| INC | FIIG | Concept | Condition |
|---|---|---|---|
| 20520 | A530B0 | 1 | 1 |
Specifications
Nominal Pipe Size Accommodated
1.000 inches 2nd end
Details
A measurement of the pipe size the item will accommodate.Thread Class
3a 1st end
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Thread Direction
right-hand 1st end
Details
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.Thread Direction
right-hand 2nd end
Details
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.Aperture Diameter
0.040 inches nominal
Details
The length of a straight line which passes through the center of an aperture,and terminates at the circumference.Flow Control Device
disk
Details
The part that controls the flow through the item.Connection Style
plain (tube) 2nd end
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.Valve Operation Method
automatic
Details
The means used to control the operation of the valve.Connection Type
threaded external pipe 2nd end
Details
Indicates the type of connection/s/.Connection Type
threaded external tube 1st end
Details
Indicates the type of connection/s/.Mounting Position
horizontal
Details
The installed position for which the item is designed.Thread Quantity Per Inch
14 1st end
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Thread Quantity Per Inch
11-1/2 2nd end
Details
The number of threads on the item per linear inch measured on a line parallel to the thread axis.Maximum Operating Pressure
10.0 pounds per square inch single response
Details
The maximum pressure at which the item is rated for operation.Nominal Thread Size
1.000 inches 2nd end
Details
A designation that is used for the purpose of general identification of the thread.Nominal Thread Size
1.312 inches 1st end
Details
A designation that is used for the purpose of general identification of the thread.Seat Angle
37.0 degrees 1st end
Details
The angle of the end surface upon which the mated surface seats.Nominal Outside Diameter Tube Accommodated
1.000 inches 1st end
Details
The nominal length of a straight line which passes through the center of the accommodated tube,and terminates at the outside circumference.Material
aluminum alloy body
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Material
rubber synthetic packing
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Media For Which Designed
fuel/oil, hydrocarbon single response
Details
The type of media for which the item is designed.Surface Treatment
anodize
Details
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.Surface Treatment Document And Classification
mil-a-8625,ty 2 mil spec single treatment response
Details
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.Style Designator
straight thru
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.Thread Series Designator
anpt 2nd end
Details
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.Thread Series Designator
un 1st end
Details
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.Master-Cross Reference List
| Part | CAGE | DAC | HCC | RNCC | RNVC | MSDS | RNAAC |
|---|---|---|---|---|---|---|---|
| 1116-516436 | 92003 | 5 | - | 3 | 2 | - | SB |
| 525L | 92003 | 5 | - | 5 | 9 | - | KE |
| 1116-516436 | 45681 | 5 | - | 5 | 9 | - | SB |
| 525L | 45681 | 5 | - | 5 | 9 | - | SB |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | U | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 29300 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 594 | Z | 9 |
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Manufacturer
LOCKHEED MARTIN CORP DIV LOCKHEED MARTIN AERONAUTICS COMPANY
CAGE: 98897
MARIETTA
, GA
, 30063-0001
UNITED STATES
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FAQs
Frequently asked questions for NSN 4820-00-640-5635
What is the NIIN of the NSN 4820-00-640-5635?
The National Item Identification Number (NIIN) of the NSN 4820-00-640-5635 is 00-640-5635
When the NSN 4820-00-640-5635 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 4820-00-640-5635 contain any precious metals?
Type/content is unknown
Does the NSN 4820-00-640-5635 contain any hazardous material?
No data in HMIRS
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