4820-00-438-6638

Find complete technical information, availability, and procurement data for: 4820-00-438-6638
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-438-6638

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

plain,optional end(pipe) all ends connection style, spring disk loading method, automatic valve operation method, right-hand all ends thread direction, piston flow control device

Product Characteristics

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

Thread Direction: right-hand all ends
Flow Control Device: piston
Disk Loading Method: spring
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Adjustable Pressure Range: +3.0 to 15.0 pounds per square inch
Nominal Thread Size: 0.750 inches all ends
Material: copper alloy body
Style Designator: angle
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3895-00-731-0528	No Name Available	04/20/1970

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
019078	Safety Relief Valve
30V68	Safety Relief Valve
PFRVA1	Safety Relief Valve
PFRVD1	Safety Relief Valve
VB-4R/SS/AS	Safety Relief Valve
VB4	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-438-6638?

The FSCG of the NSN 4820-00-438-6638 is 4820

Does the NSN 4820-00-438-6638 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-438-6638 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 4820-00-438-6638 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-438-6638 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 4820-00-438-6638 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963