879A6TT8

View detailed technical data, stock status, and sourcing information for: 879A6TT8
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-720-4978

Item Name Code

05487

Assigment Date

01/01/1963 (63 years ago)

A replaceable device designed to remove solid particles from fluids ranging in density from heavy liquids to gases. The removal of particles is accomplished by porous material (metallic or non-metallic), stacked disks, wound wire, or the like, constructed so the fluid can flow through the device while the solid particles are retained. It may be designed to fit into a filter, fluid (or similar cavity), or it may have an integral outer casing and mounting facilities and be designed to connect directly to an engine, compressor, or the like. The degree of removal of particles must be nominally rated at less than 50 microns or absolutely rated at less than 75 microns. Excludes:filter element, air conditioning. See also strainer element, sediment.

spring disk loading method, poppet flow control device, right-hand all ends thread direction, 200.0 fahrenheit single response maximum operating temp, 3a all ends thread class

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: 200.0 fahrenheit single response
Connection Style: flared (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 600.0 pounds per square inch single response
Nominal Thread Size: 0.562 inches all ends
Seat Angle: 37.0 degrees all ends
Opening Pressure Setting: 8.0 pounds per square inch
Material: aluminum alloy 2024 body
Material: rubber butadiene-acrylonitrile class nbr seat
Material Document And Classification: mil-p-5516 mil spec single material response seat
Material Document And Classification: qq-a-225/6 fed spec single material response body
Media For Which Designed: air 1st response
Media For Which Designed: carbon dioxide 2nd response
Media For Which Designed: fuel/oil, hydrocarbon 4th response
Media For Which Designed: helium 3rd response
Media For Which Designed: hydrogen 5th response
Style Designator: straight thru
Thread Series Designator: unjf all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-541-2348	No Name Available	09/01/1992

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
879A6TT	Check Valve
879A6TT8	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-720-4978?

The FSCG of the NSN 4820-00-720-4978 is 4820

Does the NSN 4820-00-720-4978 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-720-4978 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 4820-00-720-4978 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-720-4978 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 4820-00-720-4978 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963