4820-01-189-3920

Find complete technical information, availability, and procurement data for: 4820-01-189-3920
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-189-3920

Item Name Code

05488

Assigment Date

09/14/1984 (41 years ago)

spring disk loading method, 423.0 pounds per hour valve discharge flow rate, disk flow control device, threaded bonnet attachment method, inside spring bonnet type

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
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Valve Discharge Flow Rate: 423.0 pounds per hour
Connection Style: plain (pipe) 2nd end
Valve Operation Method: automatic
Features Provided: bonnet packing and pressure tight outlet side
Nominal Thread Size: 0.500 inches 2nd end
Nominal Thread Size: 1.000 inches 1st end
Opening Pressure Setting: 100.0 pounds per square inch
Special Features: reseating pressure shall not be lower than 94 psi,valve must have test lever stamp 100.0 psi on valve body
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 1st 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
75421-091	Safety Relief Valve
P075421-091	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-189-3920?

The FSCG of the NSN 4820-01-189-3920 is 4820

Does the NSN 4820-01-189-3920 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-189-3920 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 4820-01-189-3920 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-189-3920 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 4820-01-189-3920 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Fri, Sep 14, 1984