4820-01-419-6491

Find complete technical information, availability, and procurement data for: 4820-01-419-6491
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-419-6491

Item Name Code

05488

Assigment Date

09/27/1995 (30 years ago)

A length of tubing, straight, or prebent to a predetermined angle, with added component(s) that forms an end connection on one or both ends. For flexible tube assemblies, see hose assembly (as modified). For items having perforations in the tubing or attachments, see tube assembly, fire extinguishing system. Excludes:items having integral preformed or plain ends, tube, bent (as modified), and items which are branched or forked.

inside spring bonnet type, spring disk loading method, 4 all ends bolt hole quantity, disk flow control device, bolted bonnet attachment method

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: 4 all ends
Maximum Operating Temp: 100.0 fahrenheit 1st response
Maximum Operating Temp: 400.0 fahrenheit 2nd response
End Item Identification: wasp class lhd
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 2.000 inches
Maximum Operating Pressure: 180.0 pounds per square inch 2nd response
Maximum Operating Pressure: 275.0 pounds per square inch 1st response
Opening Pressure Setting: 182.0 pounds per square inch
Nominal Outside Diameter: 6.000 inches 2nd end
Nominal Outside Diameter: 7.500 inches 1st end
Nominal Thickness: 0.750 inches 2nd end
Nominal Thickness: 0.938 inches 1st end
First Connection Face To Centerline Distance: 5.500 inches
Bolt Hole Nominal Diameter: 0.750 inches all ends
Second Connection Face To Centerline Distance: 5.688 inches
Bolt Circle Nominal Diameter: 4.750 inches 2nd end
Bolt Circle Nominal Diameter: 6.000 inches 1st end
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches all ends
Raised Face Nominal Diameter: 3.625 inches 2nd end
Raised Face Nominal Diameter: 5.000 inches 1st end
Material: steel comp 303 stem
Material: steel comp 304 flow control device
Material: steel comp 304 seat
Material: steel corrosion resisting body
Media For Which Designed: steam 1st response
Media For Which Designed: water-oil-gas 2nd response
Style Designator: angle flanged ends
Furnished Items And Quantity: 1 lever
Specification/Standard Data: 81349-mil-v-24332 government specification
Nondefinitive Spec/Std Data: 150 class and a grade

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
R10AJ5L517-TS1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-419-6491?

The FSCG of the NSN 4820-01-419-6491 is 4820

Does the NSN 4820-01-419-6491 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-419-6491 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 4820-01-419-6491 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-419-6491 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 4820-01-419-6491 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Wed, Sep 27, 1995