Model: 4004-18

Check Valve

Special Features:

Dual 4-inch flapper

Properties:

Flow Control Device
Disk
Bolt Hole Quantity
8 all ends
Maximum Operating Temp
300.0 degrees fahrenheit single response
Minimum Operating Temp
-65.0 degrees fahrenheit
End Application
Sh-2g super seasprite helicopter
Valve Operation Method
Automatic
Maximum Operating Pressure
15.0 pounds per square inch single response
Outside Diameter
5.000 inches all ends
Bolt Hole Diameter
0.223 inches all ends
Bolt Circle Diameter
4.625 inches all ends
NSN
4820-01-491-2311
Part Number
4004-18
Description
Valve,check
CAGE
34163

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 4004-18 NSN 4820-01-491-2311

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:
A
ESD:
A
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 8481301010
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of copper having a pressure rating under 850 kpa

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