4820-01-281-0955

Find complete technical information, availability, and procurement data for: 4820-01-281-0955
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-281-0955

Item Name Code

05488

Assigment Date

06/17/1988 (38 years ago)

A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.

disk flow control device, union bonnet attachment method, inside spring bonnet type, spring disk loading method, 4 all ends 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: union
Disk Loading Method: spring
Bolt Hole Quantity: 4 all ends
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 1.000 inches
Adjustable Pressure Range: +10.0 to 17.0 pounds per square inch
Nominal Outside Diameter: 3.500 inches 2nd end
Nominal Outside Diameter: 4.250 inches 1st end
Nominal Thickness: 0.438 inches 2nd end
Nominal Thickness: 0.562 inches 1st end
First Connection Face To Centerline Distance: 3.938 inches
Bolt Hole Nominal Diameter: 0.625 inches all ends
Second Connection Face To Centerline Distance: 3.250 inches
Bolt Circle Nominal Diameter: 2.375 inches 2nd end
Bolt Circle Nominal Diameter: 3.125 inches 1st end
Flange Face Design: plain all ends
Material: steel uns k03504 overall
Media For Which Designed: steam single response
Style Designator: angle flanged ends

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
NMP-1531 D-10-C	Safety Relief Valve
NMP-1531 D-10-C 10T17PSI	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-281-0955?

The FSCG of the NSN 4820-01-281-0955 is 4820

Does the NSN 4820-01-281-0955 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-281-0955 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 4820-01-281-0955 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-281-0955 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 4820-01-281-0955 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Jun 17, 1988