627B5 1-4T

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627B5 1-4T
Federal Supply Group
Valves
Federal Supply Classification
4820 Nonpowered Valves
National Stock Number
4820-00-104-2021
Item Name Code
05488
Assigment Date
06/23/1968 (58 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.

integral bonnet attachment method, right-hand all ends thread direction, poppet flow control device, 0.250 inches all ends nominal pipe size accommodated, 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.

Nominal Pipe Size Accommodated
0.250 inches all ends
Thread Direction
right-hand all ends
Flow Control Device
poppet
Bonnet Type
inside spring
Bonnet Attachment Method
integral
Disk Loading Method
spring
Maximum Operating Temp
250.0 fahrenheit single response
Connection Style
plain,optional end(pipe) all ends
Valve Operation Method
automatic
Connection Type
threaded internal pipe all ends
Features Provided
valve stem lock shield and bonnet packing and pressure tight outlet side
Maximum Operating Pressure
450.0 pounds per square inch single response
Nominal Thread Size
0.250 inches all ends
Opening Pressure Setting
360.0 pounds per square inch
Material
aluminum alloy body
Media For Which Designed
water-oil-gas single response
Surface Treatment
anodize
Surface Treatment Document And Classification
mil-a-8625,ty 2 mil spec single treatment response
Style Designator
angle
Thread Series Designator
npt all ends

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
627B-5-1/4-T Safety Relief Valve
627B5 1-4T Safety Relief Valve
C1526A5E2 Safety Relief Valve

FAQs

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

What is the FSCG of the NSN 4820-00-104-2021?
The FSCG of the NSN 4820-00-104-2021 is 4820
Does the NSN 4820-00-104-2021 have a Schedule B code assigned?
Yes, the Schedule B code is 8481400000
Does NSN 4820-00-104-2021 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 4820-00-104-2021 contain precious materials?
Precious metal content is unknown
Does NSN 4820-00-104-2021 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 4820-00-104-2021 was assigned to the Federal Catalog?
It was assigned 58 years ago, on Sun, Jun 23, 1968

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