Model: 4C203A3

Check Valve

Special Features:

Fifth surface treatment: silicone, minus 480 degrees f to plus 480 degrees f for air, c02, 02, n2 applications

Properties:

Thread Class
3a 1st end
Thread Class
3b 2nd end
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Maximum Operating Temp
450.0 degrees fahrenheit single response
Minimum Operating Temp
-70.0 degrees fahrenheit
Connection Style
External seat for gasket seal (boss) 1st end
Connection Style
Gasket seal (boss) 2nd end
Valve Operation Method
Automatic
Connection Type
Threaded external boss 1st end
Connection Type
Threaded internal boss 2nd end
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
20 all ends
Maximum Operating Pressure
600.0 pounds per square inch single response
Thread Size
0.438 inches all ends
Seat Angle
37.0 degrees 1st end
Material
Aluminum alloy body
Material Specification
Qq-a-200/3, alloy 2024, t4 federal specification 1st material response body and qq-a-225/8, alloy 6061, t651 federal specification 2nd material response body
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 1 military specification single treatment response
Style Designator
Straight thru
Supplementary Features
Appl to f-16d blk40/60
Thread Series Designator
Unj all ends
NSN
4820-01-285-7428
Part Number
4C203A3
Description
Valve,check
CAGE
82829

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 4C203A3 NSN 4820-01-285-7428

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:
WF
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
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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