4820-01-421-4638

Find complete technical information, availability, and procurement data for: 4820-01-421-4638
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-421-4638

Item Name Code

05488

Assigment Date

11/08/1995 (30 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

spring disk loading method, automatic valve operation method, round with holes all ends flange shape, strategic sealift conversion ships class end item identification, flange all ends connection type

Product Characteristics

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

Disk Loading Method: spring
End Item Identification: strategic sealift conversion ships class
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Adjustable Pressure Range: +165.0 to 187.0 pounds per square inch
Special Features: inlet nozzle
Material: steel body
Style Designator: angle flanged 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
61484000 165-187PSICDSF-1509-B	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-421-4638?

The FSCG of the NSN 4820-01-421-4638 is 4820

Does the NSN 4820-01-421-4638 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-421-4638 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 4820-01-421-4638 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-421-4638 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 4820-01-421-4638 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Wed, Nov 8, 1995