BBSAA04SEE

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-236-5974

Item Name Code

05488

Assigment Date

07/18/1986 (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.

spring disk loading method, disk flow control device, inside screw bonnet type, bolted bonnet attachment method, 1.000 inches all ends nominal pipe size accommodated

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Nominal Pipe Size Accommodated: 1.000 inches all ends
Flow Control Device: disk
Bonnet Type: inside screw
Bonnet Attachment Method: bolted
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
End Item Identification: spruance class dd (963)
Connection Style: socket with brazing ring all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal pipe all ends
Adjustable Pressure Range: +27.0 to 33.0 pounds per square inch
Maximum Operating Pressure: 400.0 pounds per square inch single response
Criticality Code Justification: feat
Special Features: weapon system essential
Material: nickel alloy flow control device
Material: nickel alloy seat
Material: nickel alloy stem
Material Document And Classification: astm b-61 assn std single material response body
Material Document And Classification: qq-n-281 fed spec single material response flow control device
Material Document And Classification: qq-n-281 fed spec single material response seat
Material Document And Classification: qq-n-281 fed spec single material response stem
Style Designator: angle
Furnished Items And Quantity: 1 lever

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
BBSAA04SEE	Safety Relief Valve
D48663 1IN	Safety Relief Valve
D50854	Safety Relief Valve
R10AF1F108	Safety Relief Valve
R10AF1F108-BM1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-236-5974?

The FSCG of the NSN 4820-01-236-5974 is 4820

Does the NSN 4820-01-236-5974 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-236-5974 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 4820-01-236-5974 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-236-5974 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 4820-01-236-5974 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Fri, Jul 18, 1986