4820-01-418-4621

Find complete technical information, availability, and procurement data for: 4820-01-418-4621
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-418-4621

Item Name Code

20520

Assigment Date

08/28/1995 (30 years ago)

A projecting pipe or spout of a valve for regulating, directing, and discharging the flow of gases, liquids, or loose materials.

3000.0 pounds per square inch single response maximum operating pressure, automatic valve operation method, 1.000 inches offset distance, seawolf class ssn end item identification, horizontal or vertical mounting position

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Offset Distance: 1.000 inches
End Item Identification: seawolf class ssn
Valve Operation Method: automatic
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Criticality Code Justification: zzzy
Material: aluminum alloy body
Media For Which Designed: fuel/oil, hydrocarbon single response
Surface Treatment: anodize
Style Designator: offset
Reference Number Differentiating Characteristics: an item that supports subsafe critical systems and requires objective quality evidence that quality assurance requirements have been met, including certification of tests for hydrostatic and/or operational testing and item serialization traceable to the certifications during initial procurement and any subsequent repairs. government source inspection is involved

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
21241-001	Restrictor Check Valve
21241-001Q5	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-418-4621?

The FSCG of the NSN 4820-01-418-4621 is 4820

Does the NSN 4820-01-418-4621 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-418-4621 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-01-418-4621 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-418-4621 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 4820-01-418-4621 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Mon, Aug 28, 1995