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4820-00-449-4527

Find complete technical information, availability, and procurement data for: 4820-00-449-4527

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4820-00-449-4527
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-449-4527
Item Name Code
05488
Assigment Date
12/12/1969 (56 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.

threaded bonnet attachment method, piston flow control device, right-hand 1st end thread direction, 3a 1st end thread class, inside spring 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 1st end
Thread Direction
right-hand 1st end
Flow Control Device
piston
Bonnet Type
inside spring
Bonnet Attachment Method
threaded
Maximum Operating Temp
225.0 fahrenheit single response
Connection Style
flared (tube) 1st end
Connection Type
threaded external tube 2nd end
Connection Type
threaded external tube 1st end
Features Provided
bonnet packing and pressure tight outlet side
Thread Quantity Per Inch
16 1st end
Adjustable Pressure Range
+115.0 to 250.0 pounds per square inch
Maximum Operating Pressure
250.0 pounds per square inch single response
Nominal Thread Size
0.750 inches 1st end
Seat Angle
37.0 degrees 1st end
Opening Pressure Setting
200.0 pounds per square inch
Nominal Outside Diameter Tube Accommodated
0.500 inches 1st end
Material
aluminum alloy 2014 body
Material
aluminum alloy 2014 seat
Material
steel corrosion resisting flow control device
Material Document And Classification
qq-a-225/4 fed spec single material response body
Material Document And Classification
qq-a-225/4 fed spec single material response seat
Surface Treatment
anodize
Style Designator
angle
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
624XB-4-8-11 Safety Relief Valve
624XB4-8-11 Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-449-4527?
The FSCG of the NSN 4820-00-449-4527 is 4820
Does the NSN 4820-00-449-4527 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-449-4527 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 4820-00-449-4527 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-449-4527 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 4820-00-449-4527 was assigned to the Federal Catalog?
It was assigned 56 years ago, on Fri, Dec 12, 1969

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