4820-00-203-7912

Find complete technical information, availability, and procurement data for: 4820-00-203-7912
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-203-7912

Item Name Code

05488

Assigment Date

01/01/1963 (63 years ago)

spring disk loading method, disk flow control device, bolted bonnet attachment method, inside spring bonnet type, 12 1st end bolt hole quantity

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: bolted
Disk Loading Method: spring
Bolt Hole Quantity: 12 1st end
Maximum Operating Temp: 425.0 fahrenheit single response
Valve Operation Method: automatic or manual
Flange Shape: round with holes 1st end
Connection Type: flange 1st end
Connection Type: flange 2nd end
Features Provided: pressure tight outlet side
Maximum Operating Pressure: 100.0 pounds per square inch single response
Opening Pressure Setting: 2.0 pounds per square inch
Nominal Outside Diameter: 10.125 inches 1st end
Nominal Thickness: 0.562 inches 1st end
First Connection Face To Centerline Distance: 8.000 inches
Bolt Hole Nominal Diameter: 0.688 inches 1st end
Second Connection Face To Centerline Distance: 8.000 inches
Bolt Circle Nominal Diameter: 8.875 inches 1st end
Flange Face Design: plain 1st end
Extra Long Reference Number: 5s1166alt9and5s1179alt8and5s1287alt2
Material: copper alloy body
Material: copper alloy flow control device
Material: copper alloy seat
Material: copper alloy stem
Media For Which Designed: steam single response
Style Designator: angle flanged ends
Reference Number Differentiating Characteristics: elr no.

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
5S1166ALT9AND5S1179ALT8AND5S128-	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-203-7912?

The FSCG of the NSN 4820-00-203-7912 is 4820

Does the NSN 4820-00-203-7912 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-203-7912 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 4820-00-203-7912 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-203-7912 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 4820-00-203-7912 was assigned to the Federal Catalog?

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