4820-01-488-4539
Safety Relief Valve
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Official Item Classification
- Name
- Safety Relief Valve
- (NSN) National Stock Number
- 4820-01-488-4539
- (FSG) Federal Supply Group
- 48 Valves
- (FSC) Federal Supply Classification
- 4820 Nonpowered Valves
- (INC) Item Name Code
- 05488
- (FIIG) Federal Item Identification Guide
- A046B0
- Date
- 08/24/2001 (25 years ago)
spring disk loading method, 165.0 fahrenheit single response maximum operating temp, inside spring bonnet type, disk flow control device, bolted bonnet attachment method
Specs & Compatibility
disk
inside spring
bolted
spring
165.0 fahrenheit single response
los angeles class ssn (688)
automatic
flange all ends
1.500 inches
125.0 pounds per square inch single response
110.0 pounds per square inch
4.000 inches
4.250 inches
"1-1/2" relief valve, type uu 1571-t"
pressure range is 109 to 125 psig
copper alloy 922 body
nickel alloy flow control device
nickel alloy seat
nickel alloy stem
astm b61 assn std single material response body
qq-n-281 assn std single material response flow control device
qq-n-281 assn std single material response stem
qq-n-288 comp a assn std single material response seat
air single response
angle flanged ends
Regulatory Compliance
Item does not contain precious metal.
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
0005488
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