4820-01-021-7734

Find complete technical information, availability, and procurement data for: 4820-01-021-7734
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for NSN 4820-01-021-7734 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-01-021-7734

Item Name Code

05487

Assigment Date

05/20/1976 (50 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.

poppet flow control device, right-hand 2nd end thread direction, 3a 1st end thread class, right-hand 1st end thread direction, 3a 2nd end 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: 3a 1st end
Thread Class: 3a 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Disk Loading Method: spring
Connection Style: flareless 1st end
Connection Style: flareless 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 2nd end
Connection Type: threaded external tube 1st end
Mounting Position: horizontal
Thread Quantity Per Inch: 12 2nd end
Maximum Operating Pressure: 3500.0 pounds per square inch single response
Nominal Thread Size: 1.062 inches 2nd end
Nominal Thread Size: 1.315 inches 1st end
Seat Angle: 12.0 degrees 1st end
Seat Angle: 12.0 degrees 2nd end
Nominal Outside Diameter Tube Accommodated: 0.750 inches 2nd end
Nominal Outside Diameter Tube Accommodated: 1.000 inches 1st end
Special Features: temp range 65 to 275 f
Material: aluminum alloy overall
Style Designator: straight thru
Thread Series Designator: un 2nd end
Thread Series Designator: unf 1st end

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
4C2850-1	Check Valve
A15HS017-10	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-01-021-7734?

The FSCG of the NSN 4820-01-021-7734 is 4820

Does the NSN 4820-01-021-7734 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-01-021-7734 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 4820-01-021-7734 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-021-7734 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 4820-01-021-7734 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Thu, May 20, 1976