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4820-00-781-7154

Find complete technical information, availability, and procurement data for: 4820-00-781-7154

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4820-00-781-7154
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-781-7154
Item Name Code
05488
Assigment Date
01/01/1960 (66 years ago)

A two electrode semiconductor device having an asymmetrical voltage - current characteristic. May or may not include mounting hardware and/or heatsink. Excludes:light emitting diode and semiconductor device,photo. For items containing material such as selenium and copper oxide, see recifier, metallic.

right-hand 1st end thread direction, 212.0 fahrenheit single response maximum operating temp, poppet flow control device, 3a 1st end thread class, spring disk loading method

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 Direction
right-hand 1st end
Flow Control Device
poppet
Disk Loading Method
spring
Maximum Operating Temp
212.0 fahrenheit single response
Connection Style
flared (tube) 1st end
Valve Operation Method
automatic
Connection Type
threaded external tube 1st end
Features Provided
pressure tight outlet side
Adjustable Pressure Range
+38.0 to 42.0 pounds per square inch
Maximum Operating Pressure
200.0 pounds per square inch single response
Nominal Thread Size
0.437 inches 1st end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
37.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
steel comp 303 overall
Material Document And Classification
66 fed std single material response overall
Media For Which Designed
water, fresh single response
Style Designator
straight thru w/baffle
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
2312687PC1 Safety Relief Valve
D559TP-4D40 Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-781-7154?
The FSCG of the NSN 4820-00-781-7154 is 4820
Does the NSN 4820-00-781-7154 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-781-7154 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 4820-00-781-7154 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-781-7154 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 4820-00-781-7154 was assigned to the Federal Catalog?
It was assigned 66 years ago, on Fri, Jan 1, 1960

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