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4820-01-265-4932

Safety Relief Valve

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Official Item Classification

Name
Safety Relief Valve
(NSN) National Stock Number
4820-01-265-4932
(FSG) Federal Supply Group
48 Valves
(FSC) Federal Supply Classification
4820 Nonpowered Valves
(INC) Item Name Code
05488
(FIIG) Federal Item Identification Guide
A046B0
Date
10/15/1987 (39 years ago)

4 all ends bolt hole quantity, disk flow control device, 250.0 fahrenheit single response maximum operating temp, threaded bonnet attachment method, inside screw bonnet type

Specs & Compatibility

Flow Control Device

disk

Bonnet Type

inside screw

Bonnet Attachment Method

threaded

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

+88.0 to 108.0 pounds per square inch

Maximum Operating Pressure

400.0 pounds per square inch single response

Nominal Outside Diameter

4.250 inches all ends

Nominal Thickness

0.500 inches all ends

First Connection Face To Centerline Distance

4.500 inches

Bolt Hole Nominal Diameter

0.625 inches all ends

Second Connection Face To Centerline Distance

4.125 inches

Bolt Circle Nominal Diameter

3.125 inches all ends

Flange Face Design

raised straight all ends

Raised Face Nominal Height

0.062 inches all ends

Raised Face Nominal Diameter

2.000 inches all ends

Material

steel body

Material

steel corrosion resisting flow control device

Material

steel corrosion resisting seat

Material

steel corrosion resisting stem

Media For Which Designed

water-oil-gas single response

Style Designator

angle flanged ends

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0005488

Related Hardware Products

Part Number Description
D49565 PART R10AF5F514CS1 Safety Relief Valve
R10AF5F514-CS1 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-265-4932?
The FSCG of the NSN 4820-01-265-4932 is 4820
Does the NSN 4820-01-265-4932 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-265-4932 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 4820-01-265-4932 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-265-4932 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 4820-01-265-4932 was assigned to the Federal Catalog?
It was assigned 39 years ago, on Thu, Oct 15, 1987