581R855H01

View detailed technical data, stock status, and sourcing information for: 581R855H01
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-088-2874

Item Name Code

05488

Assigment Date

01/10/1980 (46 years ago)

poppet flow control device, spring disk loading method, 3a 1st end thread class, right-hand 1st end thread direction, 40.0 cubic feet per minute valve discharge flow rate

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 1st end
Thread Direction: right-hand 1st end
Flow Control Device: poppet
Disk Loading Method: spring
Valve Discharge Flow Rate: 40.0 cubic feet per minute
Maximum Operating Temp: -40.0 fahrenheit 1st response280.0 fahrenheit 2nd response
Connection Style: plain (tube) 1st end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Thread Quantity Per Inch: 16 1st end
Maximum Operating Pressure: 200.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches 1st end
Opening Pressure Setting: 45.0 pounds per square inch
Material: aluminum alloy 2024 body
Material: aluminum alloy 2024 seat
Material: steel comp 303 flow control device
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-s-764,type 303-canceled fed spec single material response flow control device
Media For Which Designed: air 1st response
Media For Which Designed: alcohol, ethyl 2nd response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: fuel/oil, hydrocarbon 4th response
Media For Which Designed: helium 5th response
Surface Treatment: anodize
Surface Treatment Document And Classification: mil-a-8625,type 1,class 1 mil spec single treatment response
Style Designator: straight thru w/baffle
Thread Series Designator: unjf 1st end
Furnished Items And Quantity: 1 deflector cap

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
581R55H01	Safety Relief Valve
581R855H01	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-088-2874?

The FSCG of the NSN 4820-01-088-2874 is 4820

Does the NSN 4820-01-088-2874 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-088-2874 require demilitarization?

"commerce control list items (ccli) - mut to the point of scrap required outside the united states. Inside the united states, mut is required when the demil integrity code (ic) is "3" and mut is not required when the demic is "6" (note 8)"

Does NSN 4820-01-088-2874 contain precious materials?

Precious metal content is unknown

Does NSN 4820-01-088-2874 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 4820-01-088-2874 was assigned to the Federal Catalog?

It was assigned 46 years ago, on Thu, Jan 10, 1980