D1831-1 1-2INAN

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-021-4618

Item Name Code

05486

Assigment Date

05/17/1976 (50 years ago)

manual valve operation method, disk flow control device, 4 all ends bolt hole quantity, bolted bonnet attachment method, outside screw-yoke 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: outside screw-yoke
Bonnet Attachment Method: bolted
Bolt Hole Quantity: 4 all ends
Valve Operation Method: manual
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: vertical
Features Provided: bonnet packing
Maximum Operating Pressure: 1500.0 pounds per square inch single response
Nominal Outside Diameter: 7.000 inches all ends
Nominal Thickness: 1.250 inches all ends
First Connection Face To Centerline Distance: 6.000 inches
Bolt Hole Nominal Diameter: 1.125 inches all ends
Second Connection Face To Centerline Distance: 6.000 inches
Bolt Circle Nominal Diameter: 4.875 inches all ends
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.250 inches all ends
Raised Face Nominal Diameter: 2.875 inches all ends
Material: nickel alloy flow control device
Material: nickel alloy seat
Material: nickel alloy stem
Material: nickel alloy body
Material Document And Classification: qq-n-288, comp e fed spec single material response body
Style Designator: angle
Specification/Standard Data: 81349-dod-v-24675 government specification
Nondefinitive Spec/Std Data: viii type

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
CS4820-0102 TYPE V111	Stop-Check Valve
D1831	Stop-Check Valve
D1831-1 1-2INAN	Stop-Check Valve
D1831-1-1 1-2INALSTP CHK	Stop-Check Valve
D1831-1-1/2IN	Stop-Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-021-4618?

The FSCG of the NSN 4820-01-021-4618 is 4820

Does the NSN 4820-01-021-4618 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-021-4618 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 4820-01-021-4618 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-021-4618 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 4820-01-021-4618 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Mon, May 17, 1976