90173000

View detailed technical data, stock status, and sourcing information for: 90173000
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-057-4136

Item Name Code

05487

Assigment Date

03/12/1978 (48 years ago)

A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes:valve (1), relief, pressure and temperature.

disk flow control device, streamlined with one brazing ring (tube) all ends connection style, unthreaded internal tube all ends connection type, weight disk loading method, automatic valve operation method

Product Characteristics

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

Flow Control Device: disk
Disk Loading Method: weight
Connection Style: streamlined with one brazing ring (tube) all ends
Valve Operation Method: automatic
Connection Type: unthreaded internal tube all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 700.0 pounds per square inch single response
Nominal Outside Diameter Tube Accommodated: 2.500 inches all ends
Material: copper alloy 903 overall
Material Document And Classification: qq-c-390, alloy d5/d fed spec single material response overall
Media For Which Designed: water-oil-gas single response
Style Designator: straight thru

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-105-9444	No Name Available	08/09/1991
4820-01-120-4428	No Name Available	03/01/1986

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
5594 2-1/2IN	Check Valve
5594 ASSEMBLY AS	Check Valve
90173000	Check Valve
NS-4110 ASSEMBLY AB	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-057-4136?

The FSCG of the NSN 4820-01-057-4136 is 4820

Does the NSN 4820-01-057-4136 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301090

Does NSN 4820-01-057-4136 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 4820-01-057-4136 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-057-4136 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 4820-01-057-4136 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Sun, Mar 12, 1978