Restrictor Check Valve
(NSN) National Stock Number
4820-01-435-1665
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
20520
Schedule B Code
8481309000
Summary
3b all ends thread class, right-hand all ends thread direction, 100.0 deg fahrenheit single response maximum operating temp, aircraft,hercules c-130 end item identification, gasket seal (boss) all ends connection style, automatic valve operation method
| DAC | HCC | DMIL | RNCC |
|---|---|---|---|
| 6 | - | - | 5 |
| RNVC | SADC | MSDS | RNAAC |
|---|---|---|---|
| 2 | - | - | 9Z |
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
Thread Class
3b all ends
Details
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.Thread Direction
right-hand all ends
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.Maximum Operating Temp
100.0 deg fahrenheit single response
Details
The maximum temperature at which the item is rated to operate for an extended period of time.End Item Identification
aircraft,hercules c-130
Details
The national stock number or the identification information of the end equipment for which the item is a part.Connection Style
gasket seal (boss) all ends
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 internal boss all ends
Details
Indicates the type of connection/s/.Mounting Position
horizontal
Details
The installed position for which the item is designed.Nominal Thread Size
0.438 inches all ends
Details
A designation that is used for the purpose of general identification of the thread.Special Features
0.750 in. dia hex
Details
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.Material
aluminum alloy 2024 body
Details
The chemical compound or mechanical mixture properties of which the item is fabricated.Media For Which Designed
hydraulic fluid, petroleum base single response
Details
The type of media for which the item is designed.Style Designator
straight thru
Details
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.Thread Series Designator
unf all ends
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 |
|---|---|---|---|---|---|---|---|
| 91353-1 | 26044 | 6 | - | 3 | 2 | - | ZZ |
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
| HMIC | PMIC | ESD/EMI | Criticality |
|---|---|---|---|
| N | A | - | - |
Freight
Universal / National Freight and Handling Information
| UFC | HMC | LTL | LCL |
|---|---|---|---|
| 29300 | - | W | - |
| RVC | WCC | TCC | SHC |
|---|---|---|---|
| - | 594 | Z | 9 |
Provided with every order
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FAQs
Frequently asked questions for NSN 4820-01-435-1665
What is the NIIN of the NSN 4820-01-435-1665?
The National Item Identification Number (NIIN) of the NSN 4820-01-435-1665 is 01-435-1665
When the NSN 4820-01-435-1665 was assigned to the Federal Catalog?
It was assigned 28 years ago, on Thu, Aug 15, 1996
Does the NSN 4820-01-435-1665 contain any precious metals?
Does not contain precious metal
Does the NSN 4820-01-435-1665 contain any hazardous material?
No data in HMIRS
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