4820-01-421-2547

Find complete technical information, availability, and procurement data for: 4820-01-421-2547
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-421-2547

Item Name Code

05487

Assigment Date

11/03/1995 (30 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.

spring disk loading method, 2b all ends thread class, gasket seal (boss) all ends connection style, 2350-01-390-4683 end item identification, right-hand all ends thread direction

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 all ends
Disk Loading Method: spring
End Item Identification: 2350-01-390-4683
Connection Style: gasket seal (boss) all ends
Valve Operation Method: automatic
Connection Type: threaded internal tube all ends
Mounting Position: horizontal
Thread Quantity Per Inch: 12 all ends
Maximum Operating Pressure: 100.0 pounds per square inch single response
Nominal Thread Size: 1.062 inches all ends
Opening Pressure Setting: 23.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated: 0.750 inches all ends
Media For Which Designed: fuel/oil, hydrocarbon single response
Style Designator: straight thru
Thread Series Designator: un 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
12366101	Check Valve
C1220S20-VXB268	Check Valve
C1220S20V	Check Valve
C1220S20V-VXB268	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-421-2547?

The FSCG of the NSN 4820-01-421-2547 is 4820

Does the NSN 4820-01-421-2547 have a Schedule B code assigned?

Yes, the Schedule B code is 8481301010

Does NSN 4820-01-421-2547 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 4820-01-421-2547 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-421-2547 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 4820-01-421-2547 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Fri, Nov 3, 1995