1231A8-18 1/2INCH

View detailed technical data, stock status, and sourcing information for: 1231A8-18 1/2INCH
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-444-4583

Item Name Code

05485

Assigment Date

05/07/1997 (29 years ago)

A transformer consisting of one or more primary winding(s) and one or more secondary winding(s). It may be designed for direct connection to an alternating current source for purposes of changing the secondary volts and amperes or designed to eliminate metallic interconnection between circuits in an overall one to one voltage ratio, with or without additional output windings, or items designed to automatically maintain a constant output voltage within specified limits under varying input or load conditions. Also includes items having a provision for mechanically changing the turns ratio or inductive coupling in progressive increments by means of voltage taps, ratio adjuster, or devices oe similar design. For transformers having winding(s) common to both input and output circuits, see transformer (1), power, autotransformer. Excludes:transformer (1), pulse.

disk flow control device, 4 all ends bolt hole quantity, mars class afs end item identification, 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
End Item Identification: mars class afs
Valve Operation Method: manual
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 0.500 inches
Nominal Outside Diameter: 3.500 inches all ends
Face To Face Distance: 4.250 inches
Nominal Thickness: 0.375 inches all ends
Bolt Hole Nominal Diameter: 0.625 inches all ends
Bolt Circle Nominal Diameter: 2.375 inches all ends
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches
Raised Face Nominal Diameter: 1.375 inches
Material: steel uns k03504 body
Material Document And Classification: astm a105 assn std single material response body
Style Designator: straight thru flanged ends
Furnished Items And Quantity: 1 handwheel

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
1231-1/2IN	Globe Valve
1231A8-18 1/2INCH	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-01-444-4583?

The FSCG of the NSN 4820-01-444-4583 is 4820

Does the NSN 4820-01-444-4583 have a Schedule B code assigned?

Yes, the Schedule B code is 8481803060

Does NSN 4820-01-444-4583 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 4820-01-444-4583 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-444-4583 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 4820-01-444-4583 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Wed, May 7, 1997