4820-00-498-4731

Find complete technical information, availability, and procurement data for: 4820-00-498-4731
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-498-4731

Item Name Code

05487

Assigment Date

10/17/1969 (56 years ago)

A fitting that forms an angle of less than 180 degrees (3.142 radians) from the straight flow. One connecting end has standard pipe threads, or is unthreaded and designed to accommodate a pipe. The other end has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube, or is unthreaded and designed to accommodate a tube. It may have side or heel inlet(s). See also elbow, pipe; elbow, tube; and connector, multiple, fluid pressure line.

spring disk loading method, disk flow control device, right-hand all ends thread direction, 3a all ends thread class, flared (tube) all ends connection style

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: disk
Disk Loading Method: spring
Connection Style: flared (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Facility: bulkhead
Mounting Position: horizontal
Maximum Operating Pressure: 1500.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 37.0 degrees all ends
Material: aluminum alloy overall
Media For Which Designed: helium single response
Surface Treatment: anodize
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
111-4D	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-498-4731?

The FSCG of the NSN 4820-00-498-4731 is 4820

Does the NSN 4820-00-498-4731 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-498-4731 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 4820-00-498-4731 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-498-4731 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 4820-00-498-4731 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Fri, Oct 17, 1969