4820-01-021-7735

Find complete technical information, availability, and procurement data for: 4820-01-021-7735
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-021-7735

Item Name Code

05488

Assigment Date

05/20/1976 (50 years ago)

threaded bonnet attachment method, disk flow control device, spring disk loading method, inside spring bonnet type, right-hand all ends thread direction

Product Characteristics

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

Thread Direction: right-hand all ends
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Renewable Seat Ring Type: threaded
Maximum Operating Temp: 550.0 fahrenheit single response
Connection Style: plain,optional end(pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded internal pipe all ends
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +0.0 to 400.0 pounds per square inch
Maximum Operating Pressure: 400.0 pounds per square inch single response
Nominal Thread Size: 1.250 inches 1st end
Opening Pressure Setting: 165.0 pounds per square inch
Material: steel comp 316 overall
Material Document And Classification: fed std 66,aisi 316/sae 30316 fed std single material response overall
Style Designator: angle
Thread Series Designator: npt all 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
171S-1-1-4-165P	Safety Relief Valve
171S-1-1-4-165PSI	Safety Relief Valve
40M08	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-021-7735?

The FSCG of the NSN 4820-01-021-7735 is 4820

Does the NSN 4820-01-021-7735 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-021-7735 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 4820-01-021-7735 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-021-7735 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 4820-01-021-7735 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Thu, May 20, 1976