N1779MOD31/2IN250LB

View detailed technical data, stock status, and sourcing information for: N1779MOD31/2IN250LB
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-201-8881

Item Name Code

05485

Assigment Date

02/23/1985 (41 years ago)

manual valve operation method, bolted bonnet attachment method, disk flow control device, 8 all ends bolt hole quantity, outside screw-yoke bonnet type

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
Bolt Hole Quantity: 8 all ends
Valve Operation Method: manual
Valve Size: 3.500 inches
Maximum Operating Pressure: 100.0 pounds per square inch single response
Nominal Outside Diameter: 9.000 inches all ends
Face To Face Distance: 11.500 inches
Nominal Thickness: 1.312 inches all ends
Bolt Hole Nominal Diameter: 0.875 inches all ends
Bolt Circle Nominal Diameter: 7.250 inches all ends
Special Features: magazine sprinkler valve with indicator
Material: bronze body
Material: bronze stem
Material: rubber flow control device
Style Designator: straight thru 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
DD5564	Globe Valve
MSB-122E-0350	Globe Valve
N1779M0D31/2IN2	Globe Valve
N1779MOD31/2IN250LB	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-01-201-8881?

The FSCG of the NSN 4820-01-201-8881 is 4820

Does the NSN 4820-01-201-8881 have a Schedule B code assigned?

Yes, the Schedule B code is 8481805090

Does NSN 4820-01-201-8881 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 4820-01-201-8881 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-201-8881 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 4820-01-201-8881 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Sat, Feb 23, 1985