SM-A-948028

View detailed technical data, stock status, and sourcing information for: SM-A-948028
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-101-7282

Item Name Code

05488

Assigment Date

10/05/1980 (45 years ago)

-40.0 fahrenheit 1st response maximum operating temp, right-hand all ends thread direction, poppet flow control device, 250.0 fahrenheit 2nd response maximum operating temp, 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.

Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: -40.0 fahrenheit 1st response
Maximum Operating Temp: 250.0 fahrenheit 2nd response
Connection Style: plain (pipe) all ends
Valve Operation Method: automatic
Connection Type: threaded external pipe all ends
Maximum Operating Pressure: 200.0 pounds per square inch single response
Nominal Thread Size: 0.125 inches all ends
Opening Pressure Setting: 1.0 pounds per square inch
Material: aluminum alloy 2024 body
Material: aluminum alloy 2024 flow control device
Material: aluminum alloy 2024 seat
Material: aluminum alloy 2024 stem
Material: rubber butadiene-acrylonitrile class nbr packing
Material Document And Classification: mil-r-25897,type 1 mil spec single material response packing
Material Document And Classification: qq-a-225/6,alloy 2024,t4 fed spec 1st material response or qq-a-225/6,alloy 2024,t351 fed spec 2nd material response body
Material Document And Classification: qq-a-225/6,alloy 2024,t4 fed spec 1st material response or qq-a-225/6,alloy 2024,t351 fed spec 2nd material response flow control device
Material Document And Classification: qq-a-225/6,alloy 2024,t4 fed spec 1st material response or qq-a-225/6,alloy 2024,t351 fed spec 2nd material response seat
Media For Which Designed: acetylene 2nd response
Media For Which Designed: air 1st response
Media For Which Designed: gas, inert 5th response
Media For Which Designed: hydrogen 4th response
Media For Which Designed: refrigerant 12 3rd response
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625,ty 1 mil spec single treatment response
Style Designator: straight thru
Thread Series Designator: npt all 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
559A-1M-1	Safety Relief Valve
SM-A-948028	Safety Relief Valve
SM-A-948028-1	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-101-7282?

The FSCG of the NSN 4820-01-101-7282 is 4820

Does the NSN 4820-01-101-7282 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-101-7282 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 4820-01-101-7282 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-101-7282 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 4820-01-101-7282 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Sun, Oct 5, 1980