Model: R338

Check Valve

Properties:

Thread Class
3b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Connection Style
Gasket seal (boss) 1st end
Connection Type
Threaded internal boss 1st end
Thready Qty Per Inch (tpi)
20 1st end
Maximum Operating Pressure
5.0 pounds per square inch single response
Thread Size
0.438 inches 1st end
Seat Angle
32.0 degrees 1st end
Material
Aluminum alloy body
Material
Aluminum alloy seat
Media For Which Designed
Air single response
Surface Treatment
Anodize
Style Designator
Straight thru
Thread Series Designator
Unf 1st end
NSN
4820-00-541-0452
Part Number
R338
Description
Valve,check
CAGE
81833

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 R338 NSN 4820-00-541-0452

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
127220
UFC:
64490
LTL:
77.5
LCL:
77.5
WCC:
594
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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Schedule B and Export
  • Schedule B: 8481309000
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of materials other than copper, iron or steel

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