4820-01-346-1647

Find complete technical information, availability, and procurement data for: 4820-01-346-1647
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-346-1647

Item Name Code

05487

Assigment Date

09/28/1991 (34 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, 3a all ends thread class, right-hand all ends thread direction, 3930-01-305-2111 end item identification, 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 Class: 3a all ends
Thread Direction: right-hand all ends
Flow Control Device: disk
Disk Loading Method: spring
End Item Identification: 3930-01-305-2111
Connection Style: external seat for gasket seal (boss) 1st end
Connection Style: flareless 2nd end
Valve Operation Method: automatic
Connection Type: threaded external boss 1st end
Connection Type: threaded external tube 2nd end
Mounting Position: horizontal
Nominal Thread Size: 0.750 inches 1st end
Nominal Thread Size: 0.875 inches 2nd end
Seat Angle: 24.0 degrees 2nd end
Seat Angle: 37.0 degrees 1st end
Material: steel body
Style Designator: straight thru
Thread Series Designator: unf all ends

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
P28266	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-346-1647?

The FSCG of the NSN 4820-01-346-1647 is 4820

Does the NSN 4820-01-346-1647 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-346-1647 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 4820-01-346-1647 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-346-1647 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 4820-01-346-1647 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Sat, Sep 28, 1991