4820-01-257-1495

Find complete technical information, availability, and procurement data for: 4820-01-257-1495
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-257-1495

Item Name Code

10958

Assigment Date

06/12/1987 (39 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.

air and nitrogen, gaseous media for which designed, 160.0 fahrenheit temp rating, single connection, straight flow body style, plain first end style designator, threaded external tube first end connection type

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: single connection, straight flow
Temp Rating: 160.0 fahrenheit
Media For Which Designed: air and nitrogen, gaseous
First End Connection Type: threaded external tube
First End Style Designator: plain
First End Outside Diameter Tube Accommodated: 2.050 inches nominal
First End Thread Class: 2a
First End Thread Direction: right-hand
Flow Control Device: any acceptable
End Connection Quantity: 1
Valve Venting Design Type: atmospheric
Valve Relief Design Type: pressure and vacuum
Material: aluminum alloy body

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
11450540	Gaseou Pressure Equalizing Valve
11450540-1	Gaseou Pressure Equalizing Valve
TA770-50C-50C-R	Gaseou Pressure Equalizing Valve

FAQs

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

What is the FSCG of the NSN 4820-01-257-1495?

The FSCG of the NSN 4820-01-257-1495 is 4820

Does the NSN 4820-01-257-1495 have a Schedule B code assigned?

Yes, the Schedule B code is 8481809050

Does NSN 4820-01-257-1495 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 4820-01-257-1495 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-257-1495 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 4820-01-257-1495 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Jun 12, 1987