4820-01-203-2176

Find complete technical information, availability, and procurement data for: 4820-01-203-2176
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-203-2176

Item Name Code

05488

Assigment Date

03/12/1985 (41 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.

inside spring bonnet type, disk flow control device, automatic valve operation method, spring disk loading method, 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
Valve Operation Method: automatic
Valve Size: 3.000 inches
Adjustable Pressure Range: +187.0 to 210.0 pounds per square inch
Maximum Operating Pressure: 210.0 pounds per square inch single response
Criticality Code Justification: zzzy
Material: copper alloy 922 body
Material: nickel alloy 400 packing
Reference Number Differentiating Characteristics: material will be in accordance with ships parts control center activity hx quality control,manufacturing and testing specifications

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
20129ASSYR91M	Safety Relief Valve
20129R91M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-203-2176?

The FSCG of the NSN 4820-01-203-2176 is 4820

Does the NSN 4820-01-203-2176 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-203-2176 require demilitarization?

Usml or ccl military items - demil required. Item managers,, equipment specialists, or product specialists must furnish special demilinstructions. (note 3).

Does NSN 4820-01-203-2176 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-203-2176 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 4820-01-203-2176 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Tue, Mar 12, 1985