03-NRV-SS-00375-0001

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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-140-0004

Item Name Code

05487

Assigment Date

10/07/1982 (43 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.

plain (tube) all ends connection style, 71.0 celsius single response maximum operating temp, right-hand all ends thread direction, 2a all ends thread class, poppet flow control device

Product Characteristics

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

Thread Class: 2a all ends
Thread Direction: right-hand all ends
Flow Control Device: poppet
Maximum Operating Temp: 71.0 celsius single response
Connection Style: plain (tube) all ends
Valve Operation Method: automatic
Connection Type: threaded external tube all ends
Mounting Position: horizontal or vertical
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.438 inches all ends
Material: steel comp 303 body
Material: steel comp 303 flow control device
Material Document And Classification: ed-std-66, aisi 303/sae 30303 fed std 5th material response flow control device
Material Document And Classification: fed-std-66, aisi 303/sae 30303 fed std single material response body
Media For Which Designed: ethylene glycol 1st response
Media For Which Designed: water, fresh 2nd response
Style Designator: straight thru
Thread Series Designator: unf all ends
Furnished Items And Quantity: 2 nut

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
03-NRV-SS-00375-0001	Check Valve
11462358	Check Valve
6Z-C6L-1-SS	Check Valve
SS-6C-1	Check Valve
SS-6C-1WITH NEOPRENE O RING	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-140-0004?

The FSCG of the NSN 4820-01-140-0004 is 4820

Does the NSN 4820-01-140-0004 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-140-0004 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 4820-01-140-0004 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-140-0004 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 4820-01-140-0004 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Thu, Oct 7, 1982