4820-00-138-2285

Find complete technical information, availability, and procurement data for: 4820-00-138-2285
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-138-2285

Item Name Code

05488

Assigment Date

07/24/1971 (55 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

200.0 fahrenheit single response maximum operating temp, flared (tube) all ends connection style, right-hand all ends thread direction, poppet flow control device, 3a all ends 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: 3a all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Maximum Operating Temp: 200.0 fahrenheit single response
Connection Style: flared (tube) all ends
Valve Operation Method: hydraulic
Connection Type: threaded external tube all ends
Nominal Thread Size: 0.563 inches all ends
Seat Angle: 37.0 degrees all ends
Material: aluminum alloy 2024 overall
Material Document And Classification: qq-a-200/3,alloy2024,t4 fed spec 1st material response or qq-a-225/6,alloy2024,t4 fed spec 2nd material response body
Media For Which Designed: fuel/oil, hydrocarbon single response
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625,ty 1 mil spec single treatment response
Style Designator: straight thru
Thread Series Designator: unf all ends

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
11663148	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-138-2285?

The FSCG of the NSN 4820-00-138-2285 is 4820

Does the NSN 4820-00-138-2285 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-138-2285 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 4820-00-138-2285 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-138-2285 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 4820-00-138-2285 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Sat, Jul 24, 1971