4820-01-442-8656

Find complete technical information, availability, and procurement data for: 4820-01-442-8656
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-442-8656

Item Name Code

05488

Assigment Date

03/26/1997 (29 years ago)

A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes:items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).

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

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: disk
Bonnet Type: inside spring
Bonnet Attachment Method: threaded
Disk Loading Method: spring
Valve Discharge Flow Rate: 27.0 gallons per minute
End Item Identification: mars class afs
Connection Style: plain (pipe) 1st end
Connection Style: plain,optional end(pipe) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Connection Type: threaded internal pipe 2nd end
Maximum Operating Pressure: 300.0 pounds per square inch single response
Nominal Thread Size: 1.000 inches all ends
Opening Pressure Setting: 60.0 pounds per square inch
Material: copper alloy overall
Media For Which Designed: liquid single response
Style Designator: angle
Thread Series Designator: npt all 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
0020-E01-MC0060	Safety Relief Valve
C3038-3 1.0IN SET 60PSI	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-442-8656?

The FSCG of the NSN 4820-01-442-8656 is 4820

Does the NSN 4820-01-442-8656 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-442-8656 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 4820-01-442-8656 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-442-8656 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 4820-01-442-8656 was assigned to the Federal Catalog?

It was assigned 29 years ago, on Wed, Mar 26, 1997