Model: 403

Check Valve

Properties:

Pipe Size Accommodated
0.500 inches 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Disk
Disk Loading Method
Spring
Maximum Operating Temp
550.0 degrees fahrenheit single response
Connection Style
Plain, optional end (pipe) 1st end
Valve Operation Method
Manual
Connection Type
Threaded internal pipe 1st end
Mounting Position
Horizontal
Thready Qty Per Inch (tpi)
14 1st end
Maximum Operating Pressure
400.0 pounds per square inch single response
Thread Size
0.500 inches 1st end
Material
Copper alloy seat
Material
Copper alloy body
Material Specification
Qq-c-390, alloy b5 federal specification single material response seat
Material Specification
Qq-c-390, alloy b5 federal specification single material response body
Media For Which Designed
Bromochloromethane single response
Style Designator
Straight thru
Thread Series Designator
Npt 1st end
NSN
4820-00-223-3576
Part Number
403
Description
Valve,check
CAGE
35568

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 403 NSN 4820-00-223-3576

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

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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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