Model: 18N3

Liquid Sight Indicator

Special Features:

Polytetrafluoroethylene gasket material

Properties:

Thread Direction
Right-hand both ends
Overall Height
5.000 inches
Pipe Size For Which Designed
1.000 inches both ends
Sight Diameter
2.125 inches
Maximum Tempurature Rating
250.0 degrees fahrenheit
End Connection Type
Threaded internal, plain both ends
Maximum Working Pressure
375.0 pounds per square inch
Thready Qty Per Inch (tpi)
11-1/2 both ends
Thread Size
1.000 inches both ends
Furnished Data
Liquid flow
Data Furnishing Method
Clear window and flapper
Material
Steel comp 316
Media For Which Designed
Any acceptable
Style Designator
Double port
Thread Series Designator
Npt both ends
Reference Number Differentiating Characteristics
As differentiated by material, thread size, and special features
NSN
6680-01-138-0400
Part Number
18N3
Description
Indicator,sight,liquid
CAGE
98437

An item so designed to have a portion or all of its body transparent to permit the visual examination of the amount of liquid in a pressure vessel, boiler, evaporator, still, processing tank, reservoir, pipe tubing line, and the like, and/or to determine the flow to a lubricated part. It may also be provided with an element that changes colors to indicate changes in moisture content. The item may have a means for refilling. Excludes indicator, liquid quantity and indicator, rate of flow.

Part 18N3 NSN 6680-01-138-0400

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
03175
FIIG:
A43400
Concept No.:
App. Key:
D
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

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Schedule B and Export
  • Schedule B: 9026107000
  • SITC: 87431
  • End Use: Measuring, testing, control instruments
  • NAICS: 334513
  • USDA: 1

Freight Class: Instruments and apparatus for measuring or checking the flow or level of liquids, nesoi

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