4820-00-166-8791

Find complete technical information, availability, and procurement data for: 4820-00-166-8791
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-166-8791

Item Name Code

05488

Assigment Date

02/14/1973 (53 years ago)

disk flow control device, spring disk loading method, threaded bonnet attachment method, 0.500 inches all ends nominal pipe size accommodated, 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.

Nominal Pipe Size Accommodated: 0.500 inches all ends
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Valve Discharge Flow Rate: 101.0 cubic feet per minute
Maximum Operating Temp: 400.0 fahrenheit single response
Connection Style: socket all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Features Provided: pressure tight outlet side
Adjustable Pressure Range: +46.0 to 72.0 pounds per square inch
Maximum Operating Pressure: 400.0 pounds per square inch single response
Opening Pressure Setting: 72.0 pounds per square inch
Material: nickel alloy seat
Material: nickel alloy stem
Material: nickel alloy and plastic polytetrafluoroethylene flow control device
Material: nickel alloy body
Material Document And Classification: qq-n-281 fed spec 1st material response or qq-n-288 fed spec 2nd material response body
Material Document And Classification: qq-n-281 fed spec 1st material response or qq-n-288 fed spec 2nd material response seat
Material Document And Classification: qq-n-281 fed spec 1st material response or qq-n-288 fed spec 2nd material response stem
Media For Which Designed: air single response
Style Designator: angle
Test Data Document: "81349-mil-s-901 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Furnished Items And Quantity: 2 nut and 1 lever and 2 tailpiece
Specification/Standard Data: 81349-mil-v-22549 government specification

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
20274K51M	Safety Relief Valve
20274K51MC1D883116768	Safety Relief Valve
MIL-V-22549G1-2 400-46T072SBU	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-166-8791?

The FSCG of the NSN 4820-00-166-8791 is 4820

Does the NSN 4820-00-166-8791 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-166-8791 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 4820-00-166-8791 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-166-8791 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 4820-00-166-8791 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Feb 14, 1973