Restrictor Check Valve

764382

764382
(NSN) National Stock Number
4820-00-698-6026
Federal Supply Classification
4820 Nonpowered Valves
Item Name Code
20520
Schedule B Code
-
Summary

3a 1st end thread class, right-hand 1st end thread direction, 0.095 inches nominal aperture diameter, poppet flow control device, spring disk loading method, gasket seal (tube) 1st end connection style

DAC HCC DMIL RNCC
5 - - 3
RNVC SADC MSDS RNAAC
2 - - ME
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
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.
Aperture Diameter
0.095 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
poppet
Details The part that controls the flow through the item.
Disk Loading Method
spring
Details The means of closing the item when inlet pressure decreases.
Connection Style
gasket seal (tube) 1st end
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.
Connection Type
threaded external boss 1st end
Details Indicates the type of connection/s/.
Mounting Position
horizontal or vertical
Details The installed position 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.
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 S
RVC WCC TCC SHC
1 736 Z Z

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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 4820-00-698-6026
What is the NIIN of the NSN 4820-00-698-6026?
The National Item Identification Number (NIIN) of the NSN 4820-00-698-6026 is 00-698-6026
When the NSN 4820-00-698-6026 was assigned to the Federal Catalog?
It was assigned 61 years ago, on Tue, Jan 1, 1963
Does the NSN 4820-00-698-6026 contain any precious metals?
Does not contain precious metal
Does the NSN 4820-00-698-6026 contain any hazardous material?
No data in HMIRS

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