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4820-01-274-4726

Find complete technical information, availability, and procurement data for: 4820-01-274-4726

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4820-01-274-4726
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-01-274-4726
Item Name Code
05488
Assigment Date
03/09/1988 (38 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, inside screw bonnet type, 4 all ends bolt hole quantity, disk flow control device, 250.0 fahrenheit single response maximum operating temp

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
4 all ends
Maximum Operating Temp
250.0 fahrenheit single response
Valve Operation Method
automatic
Flange Shape
round with holes all ends
Connection Type
flange all ends
Valve Size
1.000 inches
Adjustable Pressure Range
+10.0 to 12.0 pounds per square inch
Maximum Operating Pressure
275.0 pounds per square inch single response
Nominal Outside Diameter
4.250 inches 2nd end
Nominal Outside Diameter
6.000 inches 1st end
Nominal Thickness
0.438 inches 2nd end
Nominal Thickness
0.625 inches 1st end
First Connection Face To Centerline Distance
4.500 inches
Bolt Hole Nominal Diameter
0.625 inches 2nd end
Bolt Hole Nominal Diameter
0.750 inches 1st end
Second Connection Face To Centerline Distance
4.500 inches
Bolt Circle Nominal Diameter
3.125 inches 2nd end
Bolt Circle Nominal Diameter
4.750 inches 1st end
Flange Face Design
raised straight all ends
Raised Face Nominal Height
0.062 inches all ends
Raised Face Nominal Diameter
2.000 inches 2nd end
Raised Face Nominal Diameter
3.625 inches 1st end
Material
nickel alloy flow control device
Material
nickel alloy seat
Material
steel body
Material
steel stem
Media For Which Designed
water-oil-gas single 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
D49274 ASSY R10AF5J503-CM1 Safety Relief Valve
R10AF5J503-CM1 Safety Relief Valve
R10AF5J503-CM1 AND D49274 Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-274-4726?
The FSCG of the NSN 4820-01-274-4726 is 4820
Does the NSN 4820-01-274-4726 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-274-4726 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 4820-01-274-4726 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-274-4726 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 4820-01-274-4726 was assigned to the Federal Catalog?
It was assigned 38 years ago, on Wed, Mar 9, 1988

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