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4820-01-223-8649

Find complete technical information, availability, and procurement data for: 4820-01-223-8649

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4820-01-223-8649
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-01-223-8649
Item Name Code
05488
Assigment Date
01/08/1986 (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.

disk flow control device, inside spring bonnet type, 4 2nd end bolt hole quantity, union bonnet attachment method, spring disk loading 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 spring
Bonnet Attachment Method
union
Disk Loading Method
spring
Bolt Hole Quantity
4 2nd end
Bolt Hole Quantity
8 1st end
Maximum Operating Temp
750.0 fahrenheit single response
Valve Operation Method
automatic
Flange Shape
round with holes all ends
Connection Type
flange all ends
Valve Size
4.000 inches
Adjustable Pressure Range
+8.0 to 11.0 pounds per square inch
Maximum Operating Pressure
95.0 pounds per square inch single response
Nominal Outside Diameter
7.500 inches 2nd end
Nominal Outside Diameter
9.000 inches 1st end
Nominal Thickness
0.750 inches 2nd end
Nominal Thickness
0.938 inches 1st end
First Connection Face To Centerline Distance
6.375 inches
Bolt Hole Nominal Diameter
0.625 inches all ends
Second Connection Face To Centerline Distance
6.125 inches
Bolt Circle Nominal Diameter
6.000 inches 2nd end
Bolt Circle Nominal Diameter
7.500 inches 1st end
Flange Face Design
raised straight all ends
Raised Face Nominal Height
0.062 inches 1st end
Raised Face Nominal Height
1.188 inches 2nd end
Raised Face Nominal Diameter
5.000 inches 2nd end
Raised Face Nominal Diameter
6.188 inches 1st end
Material
steel body
Material
steel corrosion resisting flow control device
Material
steel corrosion resisting seat
Material
steel corrosion resisting stem
Media For Which Designed
air 1st response
Media For Which Designed
steam 2nd response
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
NMD-361 8T11 Safety Relief Valve
NMP-861 8T11PSI Safety Relief Valve
S10L 3X4 8T11 Safety Relief Valve
V-116 3X4 8T11 Safety Relief Valve
V-116-1 8T11PSI Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-223-8649?
The FSCG of the NSN 4820-01-223-8649 is 4820
Does the NSN 4820-01-223-8649 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-223-8649 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 4820-01-223-8649 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-223-8649 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 4820-01-223-8649 was assigned to the Federal Catalog?
It was assigned 40 years ago, on Wed, Jan 8, 1986

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