4820-01-191-5116

Find complete technical information, availability, and procurement data for: 4820-01-191-5116
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-191-5116

Item Name Code

20520

Assigment Date

10/09/1984 (41 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.

right-hand 1st end thread direction, piston flow control device, plain, optional end (pipe) 1st end connection style, automatic valve operation method, spring disk loading method

Product Characteristics

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

Thread Direction: right-hand 1st end
Flow Control Device: piston
Disk Loading Method: spring
Connection Style: plain, optional end (pipe) 1st end
Valve Operation Method: automatic
Nominal Thread Size: 1.312 inches 1st end
Style Designator: straight thru
Thread Series Designator: npt 1st end

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-255-6836	No Name Available	09/01/2003

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
119981	Restrictor Check Valve
17116-0550-0210	Restrictor Check Valve
4820PL0847433	Restrictor Check Valve
6631-16-S2-55	Restrictor Check Valve
PCCM1600S	Restrictor Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-191-5116?

The FSCG of the NSN 4820-01-191-5116 is 4820

Does NSN 4820-01-191-5116 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 4820-01-191-5116 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-191-5116 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 4820-01-191-5116 was assigned to the Federal Catalog?

It was assigned 41 years ago, on Tue, Oct 9, 1984