Model: 493-16D28-1/4

Check Valve

Properties:

Thread Class
3b 1st end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
400.0 degrees fahrenheit single response
Connection Style
Gasket seal (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded internal boss 1st end
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
12 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
1.312 inches 1st end
Seat Angle
30.0 degrees 1st end
Material
Aluminum alloy body
Media For Which Designed
Hydraulic fluid, silicate-ester base single response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 2 military standard single treatment response
Style Designator
Straight thru
Thread Series Designator
Un 1st end
NSN
4820-01-192-6717
Part Number
493-16D28-1/4
Description
Valve,check
CAGE
09990

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 493-16D28-1/4 NSN 4820-01-192-6717

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:
60.0
WCC:
594
TCC:
Z
SHC:
Z
ACC:
Trailers/Vehicles

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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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