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4820-00-756-7889

Find complete technical information, availability, and procurement data for: 4820-00-756-7889

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4820-00-756-7889
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-756-7889
Item Name Code
05488
Assigment Date
01/01/1960 (66 years ago)

A device for reducing the strength of an alternating current signal by a fixed or predetermined amount, without causing appreciable signal distortion, by maintaining correct impedance match.

right-hand 1st end thread direction, 2a 1st end thread class, piston flow control device, right-hand 2nd end thread direction, 2b 2nd end thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
2a 1st end
Thread Class
2b 2nd end
Thread Direction
right-hand 1st end
Thread Direction
right-hand 2nd end
Flow Control Device
piston
Disk Loading Method
spring
Valve Discharge Flow Rate
2.5 gallons per minute
Connection Style
flared (tube) 1st end
Connection Style
gasket seal(boss) 2nd end
Valve Operation Method
automatic
Connection Type
threaded external tube 1st end
Connection Type
threaded internal boss 2nd end
Nominal Thread Size
0.562 inches 1st end
Nominal Thread Size
0.625 inches 2nd end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
50.0 pounds per square inch
Material
aluminum alloy overall
Style Designator
angle
Thread Series Designator
unf 1st end
Thread Series Designator
unf 2nd end

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
9978869 Safety Relief Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-756-7889?
The FSCG of the NSN 4820-00-756-7889 is 4820
Does the NSN 4820-00-756-7889 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-756-7889 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 4820-00-756-7889 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-756-7889 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 4820-00-756-7889 was assigned to the Federal Catalog?
It was assigned 66 years ago, on Fri, Jan 1, 1960

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