4820-00-191-7127

Find complete technical information, availability, and procurement data for: 4820-00-191-7127
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-191-7127

Item Name Code

05487

Assigment Date

12/17/1971 (54 years ago)

poppet flow control device, 3a all ends thread class, 250.0 fahrenheit single response maximum operating temp, right-hand all ends thread direction, 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 Class: 3a all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: flared (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 37.0 degrees all ends
Nominal Outside Diameter Tube Accommodated: 0.250 inches all ends
Material: aluminum alloy 2024 body
Material: aluminum alloy 2024 flow control device
Material: aluminum alloy 2024 seat
Material Document And Classification: qq-a-225/6,alloy 2024,t4 fed spec single material response seat
Material Document And Classification: qq-a-225/6,alloy 2024,t4 fed spec single material response body
Material Document And Classification: qq-a-225/6,alloy 2024,t4 fed spec single material response flow control device
Media For Which Designed: acetylene 1st response
Media For Which Designed: air 2nd response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: water, fresh 4th response
Style Designator: straight thru
Thread Series Designator: unf 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
249A4TT	Check Valve
665-0019	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-191-7127?

The FSCG of the NSN 4820-00-191-7127 is 4820

Does the NSN 4820-00-191-7127 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-191-7127 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 4820-00-191-7127 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-191-7127 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 4820-00-191-7127 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Fri, Dec 17, 1971