4820-00-905-4665

Find complete technical information, availability, and procurement data for: 4820-00-905-4665
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-905-4665

Item Name Code

05488

Assigment Date

01/01/1960 (66 years ago)

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

inside screw bonnet type, poppet flow control device, integral bonnet attachment method, right-hand 1st end thread direction, spring disk loading method

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 1st end
Flow Control Device: poppet
Bonnet Type: inside screw
Bonnet Attachment Method: integral
Disk Loading Method: spring
Valve Discharge Flow Rate: 2.0 cubic feet per minute
Connection Style: flared (tube) 1st end
Valve Operation Method: manual
Connection Type: threaded external tube 1st end
Features Provided: bonnet packing and pressure tight outlet side
Adjustable Pressure Range: +20.5 to 21.5 pounds per square inch
Maximum Operating Pressure: 21.50 pounds per square inch single response
Nominal Thread Size: 0.437 inches 1st end
Seat Angle: 45.0 degrees 1st end
Opening Pressure Setting: 21.5 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Material: aluminum alloy 2024 flow control device
Material: steel comp mtx1015 seat
Media For Which Designed: sulphur dioxide, gaseous single response
Surface Treatment: anodize
Style Designator: straight thru
Test Data Document: 51663-rd10280m drawing (this is the basic governing drawing, such as a contractor drawing, original equipment manufacturer drawing, etc.; excludes any specification, standard or other document that may be referenced in a basic governing drawing)
Thread Series Designator: unf 1st end

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
RD10280M	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-905-4665?

The FSCG of the NSN 4820-00-905-4665 is 4820

Does the NSN 4820-00-905-4665 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-905-4665 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 4820-00-905-4665 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-905-4665 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 4820-00-905-4665 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960