4820-01-006-1395
Safety Relief Valve
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Official Item Classification
- Name
- Safety Relief Valve
- (NSN) National Stock Number
- 4820-01-006-1395
- (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
- 07/14/1975 (51 years ago)
spring disk loading method, threaded renewable seat ring type, union bonnet attachment method, inside spring bonnet type, disk flow control device
Specs & Compatibility
disk
inside spring
union
spring
threaded
6 all ends
425.0 fahrenheit single response
automatic
round with holes all ends
flange all ends
1.500 inches
100.0 pounds per square inch single response
25.0 pounds per square inch
5.000 inches all ends
0.500 inches all ends
3.750 inches
0.562 inches all ends
4.250 inches
3.875 inches all ends
plain all ends
copper alloy 922 body
copper alloy 922 seat
nickel alloy flow control device
nickel alloy 400 stem
qq-c-390,alloy d4/d fed spec 1st material response body
qq-c-390,alloy d4/d fed spec 3rd material response seat
qq-n-281,class a fed spec 4th material response stem
qq-n-288,comp a fed spec 2nd material response flow control device
water, salt single response
angle flanged ends
Regulatory Compliance
Precious metal content is unknown
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.
SMS
0005488
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