Restrictor Check Valve

1R3661-25-15

(NSN) National Stock Number

4820-00-203-8150

Federal Supply Classification

4820 Nonpowered Valves

Item Name Code

20520

Schedule B Code

8481309000

Summary

3a 1st end thread class, right-hand 1st end thread direction, 0.053 inches minimum and 0.058 inches maximum aperture diameter, poppet flow control device, spring disk loading method, flared (tube) 1st end connection style

DAC	HCC	DMIL	RNCC
5	-	-	3

RNVC	SADC	MSDS	RNAAC
2	-	-	MF

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

0.053 inches minimum and 0.058 inches maximum

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

flared (tube) 1st end

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the connection.

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

18 1st end

Details

The number of threads on the item per linear inch measured on a line parallel to the thread axis.

Maximum Operating Pressure

1500.0 pounds per square inch single response

Details

The maximum pressure at which the item is rated for operation.

Nominal Thread Size

0.562 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

0.375 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.

Special Features

2.880 in. over-all lg,0.813 in. across flats

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 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.

Material

steel flow control device

Details

The chemical compound or mechanical mixture properties of which the item is fabricated.

Media For Which Designed

hydraulic fluid, phosphate-ester base 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.

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 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
1116-548919	92003	5	-	3	2	-	MF
1116548919M1	92003	5	-	3	2	-	MF
667786	98897	5	-	5	2	-	MF
1116-548919	45681	5	-	5	9	-	MF
1116548919M1	45681	5	-	5	9	-	ZT
10-454-39	86768	5	-	5	9	-	MF

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
64490	-	P	P

RVC	WCC	TCC	SHC
-	594	Z	9

Certified Supplier

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Manufacturer

SAF INDUSTRIES LLC DBA SAF INDUSTRIES LLC DIV GARKENYON

CAGE: 26044

MERIDEN , CT , 06451-5135

UNITED STATES

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FAQs

Frequently asked questions for NSN 4820-00-203-8150

What is the NIIN of the NSN 4820-00-203-8150?

The National Item Identification Number (NIIN) of the NSN 4820-00-203-8150 is 00-203-8150

When the NSN 4820-00-203-8150 was assigned to the Federal Catalog?

It was assigned 61 years ago, on Tue, Jan 1, 1963

Does the NSN 4820-00-203-8150 contain any precious metals?

Type/content is unknown

Does the NSN 4820-00-203-8150 contain any hazardous material?

No data in HMIRS

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