Model: 6-441-31

Check Valve

Properties:

Pipe Size Accommodated
0.375 inches 2nd end
Thread Class
3a 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Ball
Disk Loading Method
Spring
Renewable Seat Ring Type
Pressed-in
Connection Style
Flared (tube) 1st end
Connection Style
Gasket seal (boss) 2nd end
Connection Type
Threaded external tube 1st end
Connection Type
Threaded internal pipe 2nd end
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
18 2nd end
Thready Qty Per Inch (tpi)
18 1st end
Maximum Operating Pressure
300.0 pounds per square inch single response
Thread Size
0.375 inches 2nd end
Thread Size
0.750 inches 1st end
Seat Angle
30.0 degrees 1st end
Outside Diameter Tube Accommodated
0.500 inches 1st end
Material
Copper alloy seat
Material
Copper alloy body
Material
Stainless steel flow control device
Media For Which Designed
Fuel/oil, hydrocarbon single response
Style Designator
Angle
Thread Series Designator
Npt 2nd end
Thread Series Designator
Unf 1st end
NSN
4820-00-486-3039
Part Number
6-441-31
Description
Valve,check
CAGE
72352

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

Part 6-441-31 NSN 4820-00-486-3039

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05487
FIIG:
A530B0
Concept No.:
1
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:
ESD:
MMAC:
XV
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
77.5
WCC:
594
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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Schedule B and Export
  • Schedule B: 8481301090
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of copper having a pressure rating of 850 kpa or over

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