4820-01-285-4558

Find complete technical information, availability, and procurement data for: 4820-01-285-4558
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 4820-01-285-4558 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-285-4558

Item Name Code

05488

Assigment Date

09/14/1988 (37 years ago)

A valve consisting of a single deadweight loaded disk, or two deadweight loaded disks each with a seperate seat. It is specifically designed for the relief of small pressure and vacuum conditions within a tank or other container to or from the atmosphere. The center of a single deadweight loaded disk may contain a spring loaded disk forming an additional seat or aperture. It may be spring loaded and/or equipped with a manual unloader on either the pressure or vacuum side. Exclude valve, vacuum breaking.

forrestal class cv end item identification, socket with brazing ring all ends connection style, disk flow control device, spring disk loading method, 150.0 fahrenheit single response maximum operating temp

Product Characteristics

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

Flow Control Device: disk
Disk Loading Method: spring
Maximum Operating Temp: 150.0 fahrenheit single response
End Item Identification: forrestal class cv
Connection Style: socket with brazing ring all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal tube all ends
Adjustable Pressure Range: +76.0 to 90.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 1.250 inches all ends
Material: copper alloy body
Material: nickel alloy stem
Style Designator: angle

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
20348LS41M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-285-4558?

The FSCG of the NSN 4820-01-285-4558 is 4820

Does the NSN 4820-01-285-4558 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-285-4558 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 4820-01-285-4558 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-285-4558 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 4820-01-285-4558 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Wed, Sep 14, 1988