Model: 668053-3

Check Valve

Properties:

Thread Class
3a all ends
Thread Direction
Right-hand all ends
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
External seat for gasket seal (boss) all ends
Valve Operation Method
Automatic
Connection Type
Threaded external boss all ends
Mounting Position
Horizontal or vertical
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.562 inches all ends
Material
Aluminum alloy body
Material
Aluminum alloy seat
Material
Stainless steel flow control device
Media For Which Designed
Hydraulic fluid, mineral base single response
Surface Treatment
Anodize
Style Designator
Straight thru
Thread Series Designator
Unf all ends
NSN
4820-00-618-7000
Part Number
668053-3
Description
Valve,check
CAGE
98897

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 668053-3 NSN 4820-00-618-7000

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:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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