4820-00-706-4591

Find complete technical information, availability, and procurement data for: 4820-00-706-4591
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-706-4591

Item Name Code

05488

Assigment Date

02/14/1968 (58 years ago)

poppet flow control device, 0.250 inches 1st end nominal pipe size accommodated, right-hand 1st end thread direction, 250.0 fahrenheit single 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.

Nominal Pipe Size Accommodated: 0.250 inches 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Maximum Operating Temp: 250.0 fahrenheit single response
Connection Style: plain (pipe) 1st end
Valve Operation Method: automatic
Connection Type: threaded external pipe 1st end
Features Provided: pressure tight outlet side
Thread Quantity Per Inch: 18 1st end
Maximum Operating Pressure: 200.0 pounds per square inch single response
Nominal Thread Size: 0.250 inches 1st end
Opening Pressure Setting: 5.0 pounds per square inch
Special Features: refrigerant 12 sixth media
Material: steel comp 303 body
Material: steel comp 303 flow control device
Material: steel comp 303 seat
Material Document And Classification: aisi 3031/sae 30303 assn std single material response overall
Media For Which Designed: ammonia, liquid 1st response
Media For Which Designed: butane 2nd response
Media For Which Designed: fuel/oil, hydrocarbon 3rd response
Media For Which Designed: gas, inert 4th response
Media For Which Designed: hydrogen 5th response
Style Designator: straight thru w/baffle
Thread Series Designator: npt 1st end

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
C1058A2D5	Safety Relief Valve
D539A2M5	Safety Relief Valve
D559A-2M-5	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-706-4591?

The FSCG of the NSN 4820-00-706-4591 is 4820

Does the NSN 4820-00-706-4591 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-00-706-4591 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 4820-00-706-4591 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-706-4591 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 4820-00-706-4591 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, Feb 14, 1968