NMP1086E05S0891

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-205-0168

Item Name Code

05488

Assigment Date

04/04/1985 (41 years ago)

A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.

disk flow control device, bolted bonnet attachment method, spring disk loading method, outside screw-yoke 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: outside screw-yoke
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Valve Operation Method: automatic
Flange Shape: round with holes 1st end
Flange Shape: round with holes 2nd end
Connection Type: flange 2nd end
Valve Size: 1.500 inches
Adjustable Pressure Range: +891.0 to 980.0 pounds per square inch
Maximum Operating Pressure: 1440.0 pounds per square inch single response
Nominal Outside Diameter: 6.000 inches 1st end
Nominal Outside Diameter: 6.125 inches 2nd end
Nominal Thickness: 0.625 inches 1st end
Nominal Thickness: 0.875 inches 2nd end
First Connection Face To Centerline Distance: 6.000 inches
Bolt Hole Nominal Diameter: 0.625 inches 1st end
Bolt Hole Nominal Diameter: 0.875 inches 2nd end
Second Connection Face To Centerline Distance: 4.875 inches
Bolt Circle Nominal Diameter: 4.500 inches 2nd end
Bolt Circle Nominal Diameter: 4.750 inches 1st end
Flange Face Design: plain 2nd end
Material: steel body
Material: steel corrosion resisting flow control device
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
NMP1086E05S0891	Safety Relief Valve
SD-117-D-50F891T980 1 1/2IN	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-205-0168?

The FSCG of the NSN 4820-01-205-0168 is 4820

Does the NSN 4820-01-205-0168 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-205-0168 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 4820-01-205-0168 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-205-0168 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 4820-01-205-0168 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Thu, Apr 4, 1985