Model: P21018

Oxygen System Check Valve

Properties:

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Bonnet Attachment Method
Threaded
Maximum Operating Temp
140.0 degrees fahrenheit single response
Minimum Operating Temp
-40.0 degrees fahrenheit
End Application
Astor airborne radar systems
Connection Style
Flared (tube) all ends
Valve Operation Method
Manual
Connection Type
Threaded external tube all ends
Thready Qty Per Inch (tpi)
20 all ends
Maximum Operating Pressure
100.0 pounds per square inch single response
Thread Size
0.312 inches all ends
Seat Angle
37.0 degrees all ends
Material
Rubber silicone class q flow control device
Media For Which Designed
Air 2nd response
Media For Which Designed
Oxygen, liquid single response
Style Designator
Straight thru
Thread Series Designator
Unjf all ends
NSN
4820-01-522-4757
Part Number
P21018
Description
Valve,check,oxygen System
CAGE
52713

Part P21018 NSN 4820-01-522-4757

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37942
FIIG:
A530B0
Concept No.:
App. Key:
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
A
ESD:
A
MMAC:
CRITL:
X

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