4820-01-221-8853

Find complete technical information, availability, and procurement data for: 4820-01-221-8853
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-221-8853

Item Name Code

05487

Assigment Date

12/05/1985 (40 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

8 all ends bolt hole quantity, spring disk loading method, threaded or welded renewable seat ring type, 1000.0 fahrenheit single response maximum operating temp, disk flow control device

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Flow Control Device: disk
Disk Loading Method: spring
Renewable Seat Ring Type: threaded or welded
Bolt Hole Quantity: 8 all ends
Maximum Operating Temp: 1000.0 fahrenheit single response
Valve Operation Method: automatic
Flange Shape: round with holes all ends
Connection Type: flange all ends
Mounting Position: horizontal
Valve Size: 5.000 inches
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Outside Diameter: 10.000 inches all ends
Face To Face Distance: 13.000 inches
Nominal Thickness: 0.875 inches all ends
Bolt Hole Nominal Diameter: 0.875 inches all ends
Bolt Circle Nominal Diameter: 8.500 inches all ends
Flange Face Design: raised straight all ends
Raised Face Nominal Height: 0.062 inches all ends
Raised Face Nominal Diameter: 7.312 inches all ends
Special Features: swing type
Material: steel body
Material: steel flow control device
Material: steel seat
Material Document And Classification: astm a182 gr f6 assn std single material response flow control device
Material Document And Classification: astm a182 gr f6 assn std single material response seat
Material Document And Classification: astm a216 gr wcb assn std single material response body
Media For Which Designed: water-oil-gas single response
Style Designator: straight thru flanged 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
151F-1 5IN	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-221-8853?

The FSCG of the NSN 4820-01-221-8853 is 4820

Does the NSN 4820-01-221-8853 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-221-8853 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 4820-01-221-8853 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-221-8853 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 4820-01-221-8853 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Thu, Dec 5, 1985