4820-01-423-2025

Find complete technical information, availability, and procurement data for: 4820-01-423-2025
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-423-2025

Item Name Code

27828

Assigment Date

12/18/1995 (30 years ago)

A valve with a stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. In the second position, the valve disk is lifted from the seat to allow a flow of fluid in either direction through the valve. The valve disk may be spring loaded. See also valve, stop-check and valve, stop-lift-check.

bolted bonnet attachment method, 6 all ends bolt hole quantity, inside spring bonnet type, 250.0 fahrenheit single response maximum operating temp, 250.0 fahrenheit minimum operating temp

Product Characteristics

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

Bonnet Type: inside spring
Bonnet Attachment Method: bolted
Bolt Hole Quantity: 6 all ends
Maximum Operating Temp: 250.0 fahrenheit single response
Minimum Operating Temp: 250.0 fahrenheit
End Item Identification: navy weapon sysyem code le fire fighting equipment
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: horizontal
Valve Size: 2.000 inches
Maximum Operating Pressure: 250.0 pounds per square inch single response
Nominal Outside Diameter: 11.500 inches all ends
Face To Face Distance: 11.500 inches
Nominal Thickness: 0.810 inches all ends
Bolt Hole Nominal Diameter: 0.694 inches all ends
Bolt Circle Nominal Diameter: 4.440 inches all ends
Flange Face Design: plain all ends
Material: nickel alloy body
Media For Which Designed: water, salt single response
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
803-6983468-ASSY 96	Lift-Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-423-2025?

The FSCG of the NSN 4820-01-423-2025 is 4820

Does the NSN 4820-01-423-2025 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-423-2025 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 4820-01-423-2025 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-423-2025 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 4820-01-423-2025 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Mon, Dec 18, 1995