4820-01-478-0818
Safety Relief Valve
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Official Item Classification
- Name
- Safety Relief Valve
- (NSN) National Stock Number
- 4820-01-478-0818
- (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
- 08/29/2000 (26 years ago)
bolted bonnet attachment method, disk flow control device, 1.500 inches all ends nominal pipe size accommodated, spring disk loading method, inside spring bonnet type
Specs & Compatibility
1.500 inches all ends
disk
inside spring
bolted
spring
bolted
150.0 fahrenheit single response
socket (tube) all ends
automatic
unthreaded internal pipe all ends
+100.0 to 108.0 pounds per square inch
400.0 pounds per square inch single response
105.0 pounds per square inch
"this valve meets requirements of mil-v-24332, grade b, as modified by p555n21c-9. inlet and outlet connections iaw buships drawing 803-1385884, 1 1/2" size.spclghi-shock test gaynes testing laboratories report no. 71305, approved by supships n. n. va. ltr cvn shcl/9480-249400-1 ser: 2810-3037 dated 18 oct 1971, lightweight, class 1, type a, mounting location: hull; mounting plane: base. vibration test ias mil-std-167, type 1, gaynes testing laboratories report no. 67764 dated 9 june 1967. approved by supships letter ssn537/9600/1 ser. 252-780m dated 11 june 1967"
copper alloy 962 body
copper alloy 962 seat
nickel alloy flow control device
nickel alloy stem
plastic polytetrafluoroethylene packing
ams3660 fed spec all material responses packing
mil-c-20159 mil spec all material responses body
mil-c-20159 mil spec all material responses seat
qq-n-281 fed spec all material responses flow control device
qq-n-281 fed spec all material responses stem
angle
1 spring and 2 tailpiece
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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| SW125B01R0105 | Safety Relief Valve |
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