Model: B349

Check Valve

Special Features:

Nom pipe size, accommodated, 2 in.

Properties:

Flow Control Device
Disk
Renewable Seat Ring Type
Threaded
Bolt Hole Quantity
4 1st end
Maximum Operating Temp
500.0 degrees fahrenheit single response
Valve Operation Method
Automatic
Flange Shape
Round with holes 1st end
Connection Type
Flange 1st end
Mounting Position
Horizontal
Maximum Operating Pressure
150.0 pounds per square inch 1st response
Maximum Operating Pressure
224.0 pounds per square inch 2nd response
Outside Diameter
6.000 inches 1st end
Face To Face Distance
6.875 inches
Bolt Hole Diameter
0.750 inches 1st end
Bolt Circle Diameter
4.750 inches 1st end
Flange Face Design
Plain 1st end
Material
Copper alloy flow control device
Material
Copper alloy body
Material
Nickel alloy seat
Media For Which Designed
Steam 1st response
Media For Which Designed
Water-oil-gas 2nd response
Style Designator
Straight thru
NSN
4820-00-728-6672
Part Number
B349
Description
Valve,check
CAGE

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 B349 NSN 4820-00-728-6672

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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