4820-01-159-8603

Find complete technical information, availability, and procurement data for: 4820-01-159-8603
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-159-8603

Item Name Code

05487

Assigment Date

08/14/1983 (42 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.

140.0 fahrenheit single response maximum operating temp, right-hand 1st end thread direction, gasket seal (boss) all ends connection style, 2b all ends thread class, disk 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: 2b all ends
Thread Direction: right-hand 1st end
Flow Control Device: disk
Maximum Operating Temp: 140.0 fahrenheit single response
Connection Style: gasket seal (boss) all ends
Valve Operation Method: automatic
Connection Type: threaded internal boss all ends
Mounting Position: vertical
Thread Quantity Per Inch: 14 all ends
Maximum Operating Pressure: 150.0 pounds per square inch single response
Nominal Thread Size: 0.875 inches all ends
Material: steel overall
Media For Which Designed: oil, lubricating, diester base single response
Style Designator: straight thru
Thread Series Designator: un all ends

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-107-4270	No Name Available	11/01/2015

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
5-5341-67-060-6	Check Valve
5-5341-67-060-63A	Check Valve
6IN 5341F-UT-WCB	Check Valve
N-12130-1-50	Check Valve
N-12130-1-50 REV E	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-159-8603?

The FSCG of the NSN 4820-01-159-8603 is 4820

Does the NSN 4820-01-159-8603 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-159-8603 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 4820-01-159-8603 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-159-8603 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 4820-01-159-8603 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Sun, Aug 14, 1983