559T-6D-7 Safety Relief Valve
4820-01-052-5166
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Official Item Classification
- Name
- Safety Relief Valve
- Part Number
- 559T-6D-7
- (NSN) National Stock Number
- 4820-01-052-5166
- (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
- 12/15/1977 (48 years ago)
3a 1st end thread class, right-hand 1st end thread direction, pressed-in renewable seat ring type, poppet flow control device, spring disk loading method
Specs & Compatibility
3a 1st end
right-hand 1st end
poppet
spring
pressed-in
280.0 fahrenheit single response
plain (tube) 1st end
automatic
threaded external tube 1st end
200.0 pounds per square inch single response
0.562 inches 1st end
7.0 pounds per square inch
rubber butadiene-acrylonitrile class nbr seat
steel comp 303 body
steel comp 303se flow control device
steel comp 303se stem
qq-s-764,type 303se-canceled fed spec single material response body
qq-s-764,type 303se-canceled fed spec single material response flow control device
qq-s-764,type 303se-canceled fed spec single material response stem
air 1st responsealcohol, ethyl 2nd responseammonia, gaseous 3rd responsefuel/oil, hydrocarbon 4th responsehelium 5th response
straight thru note: to be used for valve bodies of one section only.
unjf 1st end
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.
0005488