Model: 518471

Check Valve

Special Features:

Non-standard cracking pressure 8 in. H2o

Properties:

Thread Class
3a 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
480.0 degrees fahrenheit single response
Connection Style
External seat for gasket seal (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external boss 1st end
Mounting Position
Horizontal or vertical
Maximum Operating Pressure
600.0 pounds per square inch single response
Thread Size
0.438 inches 1st end
Seat Angle
37.0 degrees 1st end
Material
Aluminum alloy 2024 body
Material Specification
Qq-a-225/6 federal specification single material response body
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Style Designator
Straight thru
Thread Series Designator
Unjf 1st end
NSN
4820-00-618-7821
Part Number
518471
Description
Valve,check
CAGE
73030

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 518471 NSN 4820-00-618-7821

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:
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: 8481309000
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of materials other than copper, iron or steel

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