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4820-01-220-5575

Find complete technical information, availability, and procurement data for: 4820-01-220-5575

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4820-01-220-5575
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-01-220-5575
Item Name Code
05488
Assigment Date
11/16/1985 (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.

bolted bonnet attachment method, disk flow control device, 8 all ends bolt hole quantity, inside screw bonnet type, automatic valve operation method

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
Bonnet Type
inside screw
Bonnet Attachment Method
bolted
Bolt Hole Quantity
8 all ends
Valve Operation Method
automatic
Flange Shape
round with holes all ends
Connection Type
flange all ends
Valve Size
4.000 inches
Opening Pressure Setting
300.0 pounds per square inch
Nominal Outside Diameter
11.000 inches 1st end
Nominal Outside Diameter
9.000 inches 2nd end
Nominal Thickness
0.688 inches 2nd end
Nominal Thickness
0.812 inches 1st end
First Connection Face To Centerline Distance
6.250 inches
Bolt Hole Nominal Diameter
0.750 inches 2nd end
Bolt Hole Nominal Diameter
0.875 inches 1st end
Second Connection Face To Centerline Distance
6.250 inches
Bolt Circle Nominal Diameter
7.500 inches 2nd end
Bolt Circle Nominal Diameter
9.500 inches 1st end
Flange Face Design
raised straight all ends
Raised Face Nominal Height
0.062 inches all ends
Raised Face Nominal Diameter
6.188 inches 2nd end
Raised Face Nominal Diameter
8.500 inches 1st end
Material
rubber butadiene-acrylonitrile class nbr flow control device
Material
steel body
Material
steel comp 303 seat
Material
steel comp 303 stem
Style Designator
angle 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
C3339 4IN90T140PSI PL4198 Safety Relief Valve
S1384 4IN90T140 Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-220-5575?
The FSCG of the NSN 4820-01-220-5575 is 4820
Does the NSN 4820-01-220-5575 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-220-5575 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 4820-01-220-5575 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-220-5575 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 4820-01-220-5575 was assigned to the Federal Catalog?
It was assigned 40 years ago, on Sat, Nov 16, 1985

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