4820-00-163-5161

Find complete technical information, availability, and procurement data for: 4820-00-163-5161
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-163-5161

Item Name Code

05488

Assigment Date

11/13/1971 (54 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.

spring disk loading method, exposed spring bonnet type, 43200.0 pounds per hour valve discharge flow rate, disk flow control device, bolted 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.

Flow Control Device: disk
Bonnet Type: exposed spring
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Valve Discharge Flow Rate: 43200.0 pounds per hour
Renewable Seat Ring Type: threaded
Bolt Hole Quantity: 8 1st end
Bolt Hole Quantity: 8 2nd end
Valve Operation Method: automatic or manual
Flange Shape: round with holes 1st end
Flange Shape: round with holes 2nd end
Features Provided: pressure tight outlet side
Valve Size: 2.500 inches
Criticality Code Justification: feat
Opening Pressure Setting: 710.0 pounds per square inch
Nominal Outside Diameter: 7.500 inches 1st end
Nominal Outside Diameter: 9.000 inches 2nd end
Nominal Thickness: 1.250 inches 1st end
Nominal Thickness: 1.188 inches 2nd end
Bolt Hole Nominal Diameter: 0.875 inches 2nd end
Bolt Hole Nominal Diameter: 0.875 inches 1st end
Bolt Circle Nominal Diameter: 5.875 inches 1st end
Bolt Circle Nominal Diameter: 7.250 inches 2nd end
Flange Face Design: raised straight 2nd end
Flange Face Design: recessed straight 1st end
Raised Face Nominal Height: 0.062 inches 2nd end
Raised Face Nominal Diameter: 5.500 inches 2nd end
Recess Nominal Diameter: 6.875 inches 1st end
Recess Nominal Depth: 0.062 inches 1st end
Special Features: items are being coded as critical to insure source inspection will be performed at the point of manufacture, prior to material receipt by the us navy or other dod components. these items are piece parts or end items in support of vital military hardware necessary to sustain the successful mission of the ships, submarines, and shore stations of the us navy. critical features including, but not limited to, dimensions, tolerances/clearances, electronic characteristics, and metallurgical properties will bespecified for government q ar (quality assurance representatives) to insure the highest possible degree of quality and reliability of these parts being delivered under navicp contracts
Style Designator: angle flanged ends
Reference Number Differentiating Characteristics: as differentiated by the valve discharge flow rate requirement

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
A42437	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-163-5161?

The FSCG of the NSN 4820-00-163-5161 is 4820

Does the NSN 4820-00-163-5161 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-163-5161 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 4820-00-163-5161 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-163-5161 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 4820-00-163-5161 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Sat, Nov 13, 1971