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4820-00-420-8727

Find complete technical information, availability, and procurement data for: 4820-00-420-8727

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4820-00-420-8727
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-420-8727
Item Name Code
05493
Assigment Date
03/12/1969 (57 years ago)

A mechanical device employing a flexible dished diaphragm to convert air pressure into physical force to actuate the brake shoes of a vehicle. See also actuator, safety; actuator, spring brake; and rotochamber.

threaded external tube first end connection type, flared first end style designator, refrigerant media for which designed, 0.500 inches nominal first end outside diameter tube accommodated, straight thru body style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style
straight thru
Media For Which Designed
refrigerant
First End Connection Type
threaded external tube
First End Style Designator
flared
First End Outside Diameter Tube Accommodated
0.500 inches nominal
First End Thread Class
2a
First End Thread Direction
right-hand
Second End Relationship With First End
not identical
Second End Connection Type
threaded external tube
Second End Style Designator
flared
Second End Outside Diameter Tube Accommodated
0.375 inches nominal
Second End Thread Class
2a
Second End Thread Direction
right-hand
First End Seat Angle In Deg
37.0
Second End Seat Angle In Deg
37.0
Flow Control Device
ball
End Connection Quantity
2
Valve Expansion Control Type
pressure
Valve Pressure Limiting Device
not included
Valve Equalizer Location
internal
Material
copper alloy body

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
161418 Expansion Valve
6731429 Expansion Valve

FAQs

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

What is the FSCG of the NSN 4820-00-420-8727?
The FSCG of the NSN 4820-00-420-8727 is 4820
Does the NSN 4820-00-420-8727 have a Schedule B code assigned?
Yes, the Schedule B code is 8481809050
Does NSN 4820-00-420-8727 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 4820-00-420-8727 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-420-8727 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 4820-00-420-8727 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Wed, Mar 12, 1969

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