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4820-00-272-2256

Restrictor Check Valve

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Official Item Classification

Name
Restrictor Check Valve
(NSN) National Stock Number
4820-00-272-2256
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
20520
(FIIG) Federal Item Identification Guide
A530B0
Date
07/30/1973 (53 years ago)

right-hand 1st end thread direction, 0.070 inches nominal aperture diameter, flareless 1st end connection style, poppet flow control device, 3a 1st end thread class

Specs & Compatibility

Thread Class

3a 1st end

Thread Direction

right-hand 1st end

Aperture Diameter

0.070 inches nominal

Flow Control Device

poppet

Connection Style

flareless 1st end

Valve Operation Method

automatic

Connection Type

threaded external tube 1st end

Mounting Position

horizontal or vertical

Thread Quantity Per Inch

20 1st end

Maximum Operating Pressure

3000.0 pounds per square inch single response

Nominal Thread Size

0.437 inches 1st end

Seat Angle

12.0 degrees 1st end

Nominal Outside Diameter Tube Accommodated

0.250 inches 1st end

Material

steel corrosion resisting overall

Media For Which Designed

hydraulic fluid, phosphate-ester base single response

Style Designator

straight thru

Thread Series Designator

unjf 1st end

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0020520

Related Hardware Products

Part Number Description
2R0141-2 Restrictor Check Valve
749870-103 Restrictor Check Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-00-272-2256?
The FSCG of the NSN 4820-00-272-2256 is 4820
Does the NSN 4820-00-272-2256 have a Schedule B code assigned?
Yes, the Schedule B code is 8481302090
Does NSN 4820-00-272-2256 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 4820-00-272-2256 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-272-2256 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 4820-00-272-2256 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Mon, Jul 30, 1973