Model: 4R121-123
Restrictor Check ValveProperties:
Thread Class
3a 2nd end
Thread Class
3a 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Connection Style
Flareless 1st end
Connection Style
Flareless 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external tube 1st end
Connection Type
Threaded external tube 2nd end
Thready Qty Per Inch (tpi)
18 1st end
Thready Qty Per Inch (tpi)
20 2nd end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.438 inches 2nd end
Thread Size
0.562 inches 1st end
Seat Angle
12.0 degrees 1st end
Seat Angle
12.0 degrees 2nd end
Outside Diameter Tube Accommodated
0.250 inches 2nd end
Outside Diameter Tube Accommodated
0.375 inches 1st end
Media For Which Designed
Hydraulic fluid, phosphate-ester base single response
Surface Treatment
Passivate
Style Designator
Straight thru
Thread Series Designator
Unjf 2nd end
Thread Series Designator
Unjf 1st end
NSN
4820-00-283-1181
Part Number
4R121-123
Description
Valve,restrictor Check
CAGE
Part 4R121-123 NSN 4820-00-283-1181
INC:
20520 FIIG:
A530B0 Concept No.:
1 App. Key:
Cond. Code:
1 Status:
A Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsHMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X Packaging & Shipping
Pack Size:
-- Paclk Weight:
0.3000lbs Item Weight:
-- Item Dim:
-- OPI:
O SPI No.:
SPI Rev.:
SPC Mkg:
00 LVL_A:
Q LVL_B:
Q Freight Classification
NMFC:
051080 UFC:
29300 LTL:
RATING VARIABLE LCL:
-- WCC:
576 TCC:
Z SHC:
9 ACC:
Construction Materials End Items End applications NSN 4820-00-283-1181 is a component of
- Viking S-3b Aircraft
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