4820-01-220-7674

Find complete technical information, availability, and procurement data for: 4820-01-220-7674
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-220-7674

Item Name Code

05488

Assigment Date

11/19/1985 (40 years ago)

outside screw-yoke bonnet type, disk flow control device, spring disk loading method, bolted bonnet attachment method, 8 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: outside screw-yoke
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Bolt Hole Quantity: 8 all ends
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Valve Size: 4.000 inches
Adjustable Pressure Range: +144.0 to 167.0 pounds per square inch
Nominal Outside Diameter: 11.000 inches 1st end
Nominal Outside Diameter: 9.000 inches 2nd end
Nominal Thickness: 0.938 inches 2nd end
Nominal Thickness: 1.000 inches 1st end
First Connection Face To Centerline Distance: 8.250 inches
Bolt Hole Nominal Diameter: 0.750 inches 2nd end
Bolt Hole Nominal Diameter: 0.875 inches 1st end
Second Connection Face To Centerline Distance: 7.750 inches
Bolt Circle Nominal Diameter: 7.500 inches 2nd end
Bolt Circle Nominal Diameter: 9.500 inches 1st end
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches all ends
Raised Face Nominal Diameter: 6.188 inches 2nd end
Raised Face Nominal Diameter: 8.500 inches 1st end
Material: steel body
Material: steel corrosion resisting flow control device
Material: steel corrosion resisting stem
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
D10N-NMP15050PTION 1-144T167PSI	Safety Relief Valve
D10NNMP15050PTIO	Safety Relief Valve
D10NNMP15050PTION 1-144T167PSI	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-220-7674?

The FSCG of the NSN 4820-01-220-7674 is 4820

Does the NSN 4820-01-220-7674 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-220-7674 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 4820-01-220-7674 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-220-7674 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 4820-01-220-7674 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Tue, Nov 19, 1985