Model: 20D 4IN

Check Valve

Properties:

Flow Control Device
Disk
Disk Loading Method
Spring
Bolt Hole Quantity
8 all ends
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Mounting Position
Horizontal or vertical
Valve Size
4.000 inches
Outside Diameter
9.000 inches all ends
Face To Face Distance
7.000 inches
Thickness
0.938 inches all ends
Bolt Circle Diameter
7.500 inches all ends
Flange Face Design
Plain all ends
Material
Copper alloy 922 body
Material
Steel comp 304 flow control device
Material
Steel comp 304 seat
Material
Steel comp 304 stem
Style Designator
Straight through flanged ends
NSN
4820-01-407-0939
Part Number
20D 4IN
Description
Valve,check
CAGE

Part 20D 4IN NSN 4820-01-407-0939

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:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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