4820-01-570-8367

Find complete technical information, availability, and procurement data for: 4820-01-570-8367
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-570-8367

Item Name Code

05488

Assigment Date

01/14/2009 (17 years ago)

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

right-hand 1st end thread direction, disk flow control device, inside spring bonnet type, right-hand 2nd end thread direction, pressure seal, ring type bonnet attachment 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
Thread Direction: right-hand 2nd end
Flow Control Device: disk
Bonnet Type: inside spring
Bonnet Attachment Method: pressure seal, ring type
Disk Loading Method: spring
Valve Discharge Flow Rate: 31.0 gallons per minute
Maximum Operating Temp: 406.0 fahrenheit single response
Minimum Operating Temp: -60.0 fahrenheit
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: 1.250 inches 1st end
Nominal Thread Size: 1.250 inches 2nd end
Opening Pressure Setting: 25.0 pounds per square inch
Part Name Assigned By Controlling Agency: relief valve
Special Features: pressure tight cap; commercial valve; replaces 20-1 1/4-2s
Material: bronze overall
Media For Which Designed: liquid single response
Style Designator: angle
Thread Series Designator: npt 2nd end
Thread Series Designator: npt 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
0020-F01-MG0025	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-570-8367?

The FSCG of the NSN 4820-01-570-8367 is 4820

Does the NSN 4820-01-570-8367 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-570-8367 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 4820-01-570-8367 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-570-8367 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 4820-01-570-8367 was assigned to the Federal Catalog?

It was assigned 17 years ago, on Wed, Jan 14, 2009