4820-01-254-0149

Find complete technical information, availability, and procurement data for: 4820-01-254-0149
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-254-0149

Item Name Code

05488

Assigment Date

04/29/1987 (39 years ago)

A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.

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

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: poppet
Bonnet Type: inside spring
Bonnet Attachment Method: integral
Disk Loading Method: spring
Maximum Operating Temp: -40.0 fahrenheit 1st response
Maximum Operating Temp: 400.0 fahrenheit 2nd response
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Adjustable Pressure Range: +50.0 to 150.0 pounds per square inch
Maximum Operating Pressure: 2500.0 pounds per square inch single response
Nominal Thread Size: 0.500 inches all ends
Special Features: 2.562 in. long 0.875 in. hex size
Material: rubber fluorocarbon class fpm packing
Material: steel comp 316 body
Material: steel comp 316 flow control device
Media For Which Designed: water-oil-gas single response
Style Designator: straight thru note: to be used for valve bodies of one section only.
Thread Series Designator: npt all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-315-0264	No Name Available	06/01/1992

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
44624-666-00-2	Safety Relief Valve
SS-8CPA2-50	Safety Relief Valve
SS-8CPA2-50-DC	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-254-0149?

The FSCG of the NSN 4820-01-254-0149 is 4820

Does the NSN 4820-01-254-0149 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-254-0149 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 4820-01-254-0149 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-254-0149 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 4820-01-254-0149 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Wed, Apr 29, 1987