Model: 31F-DI7-12IN

Check Valve

Special Features:

Swing check type

Properties:

Flow Control Device
Disk
Bolt Hole Quantity
12 all ends
Maximum Operating Temp
450.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Mounting Position
Horizontal
Valve Size
12.000 inches
Maximum Operating Pressure
275.0 pounds per square inch single response
Outside Diameter
19.000 inches all ends
Face To Face Distance
27.500 inches
Thickness
1.250 inches all ends
Bolt Hole Diameter
0.875 inches all ends
Bolt Circle Diameter
17.000 inches all ends
Flange Face Design
Raised straight all ends
Raised Face Height
0.062 inches all ends
Raised Face Diameter
15.000 inches all ends
Material
Copper alloy 922 flow control device
Material
Copper alloy 922 seat
Material
Iron cast uns f32800 body
Material Specification
Astm a395 assn standard single material response body
Material Specification
Astm b61 assn standard single material response flow control device
Material Specification
Astm b61 assn standard single material response seat
Media For Which Designed
Water-oil-gas single response
Style Designator
Straight through flanged ends
NSN
4820-01-270-4266
Part Number
31F-DI7-12IN
Description
Valve,check
CAGE
61661

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 31F-DI7-12IN NSN 4820-01-270-4266

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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Schedule B and Export
  • Schedule B: 8481302010
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of iron

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