E1522

View detailed technical data, stock status, and sourcing information for: E1522
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-315-2558

Item Name Code

05487

Assigment Date

02/13/1990 (36 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, right-hand all ends thread direction, gasket seal (boss) all ends connection style, automatic valve operation method, 3b all ends thread class

Product Characteristics

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

Thread Class: 3b all ends
Thread Direction: right-hand all ends
Flow Control Device: disk
Connection Style: gasket seal (boss) all ends
Valve Operation Method: automatic
Connection Type: threaded internal boss all ends
Mounting Position: horizontal or vertical
Thread Quantity Per Inch: 12 all ends
Nominal Thread Size: 0.750 inches all ends
Material: steel body
Style Designator: straight thru
Thread Series Designator: unj 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
E1522	Check Valve
MS28882C-12	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-315-2558?

The FSCG of the NSN 4820-01-315-2558 is 4820

Does the NSN 4820-01-315-2558 have a Schedule B code assigned?

Yes, the Schedule B code is 8481302090

Does NSN 4820-01-315-2558 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 4820-01-315-2558 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-315-2558 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 4820-01-315-2558 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Tue, Feb 13, 1990