4820-00-491-6391

Find complete technical information, availability, and procurement data for: 4820-00-491-6391
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 4820-00-491-6391 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

4820-00-491-6391

Item Name Code

05485

Assigment Date

03/23/1972 (54 years ago)

A valve designed to automatically maintain within close limits a predetermined outlet pressure which may be adjustable within a specified range regardless of the higher fluctuating or constant inlet pressure. It is designed for use with compressed gas(es) and various liquids and may include gauges. It may be inline or cartridge (manifold) design. Excludes:regulator, pressure, medical gas administration apparatus; regulator, oxygen, barometric continuous flow; regulator, oxygen demand; regulator, oxygen diluter demand; and valve(1), fluid pressure regulating, aircraft.

3a all ends thread class, needle flow control device, right-hand all ends thread direction, union bonnet attachment method, inside screw bonnet type

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: needle
Bonnet Type: inside screw
Bonnet Attachment Method: union
Maximum Operating Temp: 450.0 fahrenheit single response
Connection Style: plain (tube) all ends
Valve Operation Method: manual
Connection Type: threaded external tube all ends
Mounting Facility: bulkhead
Features Provided: bonnet packing
Thread Quantity Per Inch: 16 1st end
Maximum Operating Pressure: 5000.0 pounds per square inch single response
Nominal Thread Size: 0.750 inches all ends
Special Features: incl 2 sleeve; regulating type stem
Material: steel comp 316 overall
Material Document And Classification: 66 fed std single material response overall
Media For Which Designed: water-oil-gas single response
Surface Treatment: passivate
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response
Style Designator: straight thru
Thread Series Designator: unf all ends
Furnished Items And Quantity: 2 nut and 4 ferrule

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
8RS8-316	Globe Valve
991744-1	Globe Valve
SS-8RS8	Globe Valve

FAQs

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

What is the FSCG of the NSN 4820-00-491-6391?

The FSCG of the NSN 4820-00-491-6391 is 4820

Does the NSN 4820-00-491-6391 have a Schedule B code assigned?

Yes, the Schedule B code is 8481803060

Does NSN 4820-00-491-6391 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 4820-00-491-6391 contain precious materials?

Precious metal content is unknown

Does NSN 4820-00-491-6391 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 4820-00-491-6391 was assigned to the Federal Catalog?

It was assigned 54 years ago, on Thu, Mar 23, 1972