Model: 426WS-2

Check Valve

Properties:

Pipe Size Accommodated
2.000 inches all ends
Flow Control Device
Disk
Maximum Operating Temp
150.0 degrees fahrenheit 2nd response
Maximum Operating Temp
425.0 degrees fahrenheit 1st response
Connection Style
Socket with brazing ring (pipe) all ends
Valve Operation Method
Automatic
Connection Type
Unthreaded internal pipe all ends
Mounting Position
Horizontal or vertical
Valve Size
2.000 inches
Maximum Operating Pressure
200.0 pounds per square inch 1st response
Maximum Operating Pressure
400.0 pounds per square inch 2nd response
Material
Copper alloy 922 body
Material
Copper alloy 922 seat
Material
Nickel alloy 400 flow control device or nickel alloy r-405 flow control device
Material Specification
Qq-c-390, alloy d4/d/ federal specification single material response body
Material Specification
Qq-c-390, alloy d4/d/ federal specification single material response seat
Material Specification
Qq-n-281 federal specification 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
Test Data Document
81349-mil-s-901 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
NSN
4820-00-483-0682
Part Number
426WS-2
Description
Valve,check
CAGE
90664

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 426WS-2 NSN 4820-00-483-0682

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.5000lbs
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:
050855
UFC:
29290
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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