D559A-4D-50 Safety Relief Valve
4820-00-604-4656
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Official Item Classification
- Name
- Safety Relief Valve
- Part Number
- D559A-4D-50
- (NSN) National Stock Number
- 4820-00-604-4656
- (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
- 01/25/1975 (51 years ago)
spring disk loading method, 3a 1st end thread class, right-hand 1st end thread direction, pressed-in renewable seat ring type, poppet flow control device
Specs & Compatibility
3a 1st end
right-hand 1st end
poppet
spring
pressed-in
-40.0 fahrenheit 1st response
250.0 fahrenheit 2nd response
plain (tube) 1st end
automatic
threaded external tube 1st end
200.0 pounds per square inch single response
0.438 inches 1st end
50.0 pounds per square inch
0.250 inches 1st end
aluminum alloy and rubber butadiene-acrylonitrile class nbr flow control device
aluminum alloy seat
aluminum alloy body
air 1st responsealcohol, ethyl 2nd responseammonia, gaseous 3rd responsefuel/oil, hydrocarbon 4th responsehelium 5th response
straight thru w/baffle
unjf 1st end
1 deflector cap
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
Related Hardware Products
| Part Number | Description |
|---|---|
| 6153-30-50 | Safety Relief Valve |
| D559A-4D-50 | Safety Relief Valve |