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D50521-AL-BM3 Safety Relief Valve

4820-01-277-5407

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Official Item Classification

Name
Safety Relief Valve
Part Number
D50521-AL-BM3
(NSN) National Stock Number
4820-01-277-5407
(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
04/22/1988 (38 years ago)

spring disk loading method, 1.250 inches all ends nominal pipe size accommodated, disk flow control device, automatic valve operation method, socket all ends connection style

Specs & Compatibility

Nominal Pipe Size Accommodated

1.250 inches all ends

Flow Control Device

disk

Disk Loading Method

spring

Connection Style

socket all ends

Valve Operation Method

automatic

Connection Type

unthreaded internal pipe all ends

Adjustable Pressure Range

+67.0 to 83.0 pounds per square inch

Material

copper alloy 922 body

Material

nickel alloy flow control device

Material

nickel alloy seat

Media For Which Designed

water-oil-gas single response

Style Designator

angle

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
D50521-AL-BM3 Safety Relief Valve
R10AG1G1AL-BM3 Safety Relief Valve

Frequently Asked Questions

What is the FSCG of the NSN 4820-01-277-5407?
The FSCG of the NSN 4820-01-277-5407 is 4820
Does the NSN 4820-01-277-5407 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-01-277-5407 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 4820-01-277-5407 contain precious materials?
Item does not contain precious metal.
Does NSN 4820-01-277-5407 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 4820-01-277-5407 was assigned to the Federal Catalog?
It was assigned 38 years ago, on Fri, Apr 22, 1988