4820-00-032-4763

Find complete technical information, availability, and procurement data for: 4820-00-032-4763
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-032-4763

Item Name Code

05487

Assigment Date

11/01/1972 (53 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

right-hand 1st end thread direction, poppet flow control device, 3a 1st end thread class, right-hand 2nd 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
Maximum Operating Temp: 275.0 fahrenheit single response
End Item Identification: ah-1w advance attack helicopter
Connection Style: flared (tube) 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 or vertical
Thread Quantity Per Inch: 20 2nd end
Thread Quantity Per Inch: 20 1st end
Maximum Operating Pressure: 3000.0 pounds per square inch single response
Nominal Thread Size: 0.437 inches 1st end
Nominal Thread Size: 0.548 inches 2nd end
Seat Angle: 12.0 degrees 2nd end
Seat Angle: 37.0 degrees 1st end
Criticality Code Justification: feat
Nominal Outside Diameter Tube Accommodated: 0.250 inches 2nd end
Nominal Outside Diameter Tube Accommodated: 0.250 inches 1st end
Special Features: weapon system essential
Material: aluminum alloy seat
Material: aluminum alloy body
Material: steel flow control device
Material Document And Classification: mil-s-7720,comp 303s mil spec single material response flow control device
Material Document And Classification: qq-a-200/3, alloy 2024, t4 fed spec single material response body
Material Document And Classification: qq-a-225/6,alloy2024,t351 fed spec single material response packing
Media For Which Designed: hydraulic fluid, petroleum base single response
Style Designator: straight thru
Thread Series Designator: unf 1st end
Thread Series Designator: unjf 2nd 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
205-076-413	Check Valve
205-076-413-1	Check Valve
2C1010	Check Valve
3269-4	Check Valve

FAQs

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

What is the FSCG of the NSN 4820-00-032-4763?

The FSCG of the NSN 4820-00-032-4763 is 4820

Does the NSN 4820-00-032-4763 have a Schedule B code assigned?

Yes, the Schedule B code is 8481309000

Does NSN 4820-00-032-4763 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 4820-00-032-4763 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-032-4763 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 4820-00-032-4763 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Wed, Nov 1, 1972