4820-01-261-0163

Find complete technical information, availability, and procurement data for: 4820-01-261-0163
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 4820-01-261-0163 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

4820-01-261-0163

Item Name Code

05488

Assigment Date

08/07/1987 (39 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 2nd end thread direction, right-hand 1st end thread direction, poppet flow control device, 3a 1st end thread class, 3b 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: 3b 2nd end
Thread Direction: right-hand 1st end
Thread Direction: right-hand 2nd end
Flow Control Device: poppet
Connection Style: flared (tube) 1st end
Connection Style: gasket seal(boss) 2nd end
Valve Operation Method: automatic
Connection Type: threaded external tube 1st end
Connection Type: threaded internal boss 2nd end
Nominal Thread Size: 0.438 inches all ends
Seat Angle: 37.0 degrees 1st end
Opening Pressure Setting: 1500.0 pounds per square inch
Material: aluminum body
Material: rubber synthetic seat
Media For Which Designed: air 1st response
Media For Which Designed: alcohol, ethyl 2nd response
Media For Which Designed: ammonia, liquid 4th response
Media For Which Designed: ammonia, gaseous 3rd response
Media For Which Designed: refrigerant 12 5th response
Style Designator: straight thru
Thread Series Designator: unf 2nd end
Thread Series Designator: unjf 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
332-2246	Safety Relief Valve
332-2246-060	Safety Relief Valve
5177A-4TB-1500	Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-01-261-0163?

The FSCG of the NSN 4820-01-261-0163 is 4820

Does the NSN 4820-01-261-0163 have a Schedule B code assigned?

Yes, the Schedule B code is 8481400000

Does NSN 4820-01-261-0163 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 4820-01-261-0163 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-01-261-0163 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 4820-01-261-0163 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Aug 7, 1987