Model: 428WS1 1-2

Check Valve

Properties:

Pipe Size Accommodated
1.500 inches 1st end
Flow Control Device
Disk
Maximum Operating Temp
150.0 degrees fahrenheit 2nd response
Maximum Operating Temp
550.0 degrees fahrenheit 1st response
Connection Style
Streamlined with two brazing ring (pipe) 1st end
Valve Operation Method
Automatic
Connection Type
Unthreaded internal pipe 1st end
Mounting Position
Horizontal
Maximum Operating Pressure
1000.0 pounds per square inch 2nd response
Maximum Operating Pressure
300.0 pounds per square inch 1st response
Material
Copper alloy flow control device
Material
Copper alloy seat
Material
Copper alloy body
Material Specification
Astm b61 assn standard single material response body
Material Specification
Astm b61 assn standard single material response flow control device
Media For Which Designed
Steam 1st response
Media For Which Designed
Water-oil-gas 2nd response
Style Designator
Straight thru
NSN
4820-00-541-7389
Part Number
428WS1 1-2
Description
Valve,check
CAGE
63686

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 428WS1 1-2 NSN 4820-00-541-7389

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:
9
ACC:
Trailers/Vehicles

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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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