4820-00-172-9122

Find complete technical information, availability, and procurement data for: 4820-00-172-9122
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-172-9122

Item Name Code

05488

Assigment Date

12/03/1971 (54 years ago)

exposed spring bonnet type, spring disk loading method, bolted bonnet attachment method, disk flow control device, 18882.0 pounds per hour valve discharge flow rate

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: exposed spring
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Valve Discharge Flow Rate: 18882.0 pounds per hour
Renewable Seat Ring Type: threaded
Bolt Hole Quantity: 4 1st end
Bolt Hole Quantity: 4 2nd end
End Item Identification: hayes class t-ag 195
Valve Operation Method: automatic or manual
Flange Shape: round with holes 1st end
Flange Shape: round with holes 2nd end
Connection Type: flange 1st end
Connection Type: flange 2nd end
Features Provided: pressure tight outlet side
Valve Size: 1.500 inches
Criticality Code Justification: feat
Opening Pressure Setting: 643.0 pounds per square inch
Nominal Outside Diameter: 7.000 inches 2nd end
Nominal Outside Diameter: 7.500 inches 1st end
Nominal Thickness: 0.688 inches 1st end
Nominal Thickness: 1.312 inches 2nd end
Bolt Hole Nominal Diameter: 0.750 inches 1st end
Bolt Hole Nominal Diameter: 1.125 inches 2nd end
Bolt Circle Nominal Diameter: 4.875 inches 2nd end
Bolt Circle Nominal Diameter: 6.000 inches 1st end
Flange Face Design: plain 2nd end
Flange Face Design: raised straight 1st end
Raised Face Nominal Height: 0.062 inches 1st end
Raised Face Nominal Diameter: 5.000 inches 1st end
Special Features: weapon system essential
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
57694000	Safety Relief Valve
A32934-2	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-172-9122?

The FSCG of the NSN 4820-00-172-9122 is 4820

Does the NSN 4820-00-172-9122 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-172-9122 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 4820-00-172-9122 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-172-9122 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 4820-00-172-9122 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Fri, Dec 3, 1971