Standard Features:

  • Impeller – Indicator used for media to enhance flow indication in either direction
  • Internal Wipers – cleans viewing area quickly by hand as needed

Connection Sizes:

  • 1/4″ to 1-1/2″ NPT (Female)

Standard Ratings:

  • Maximum 230 PSIG, 212°F

Standard Wetted Materials:

  • Body: Nickel Plated Brass or 316SS
  • Gaskets: Fluoroelastomer
  • Impeller: Acetal Plastic
  • Spindle: 416SS Spindle
  • Wipers: Polyolefin (For Brass Body) or Viton® (For SS Body)
  • Glass: Borosilicate Cylinder

Standard Non-Wetted Materials:

  • Not Applicable


  • BSPP & BSPT Connections
  • Bi-Directional

Application Notes:

  • Steam Service: Not acceptable
  • Potable Water: This Brass indicator is not suitable for potable water
  • Vacuum Service: Not acceptable
  • Gaseous Service: Not designed for lightweight gases
  • Corrosion: Before ordering, verify all materials of our sight flow indicators are compatible with the service media(s), intermittently used cleaners, the environment, and cleaning processes in conjunction with the temperatures and pressures of the application(s) and future applications. John C. Ernst LLC. does not make chemical compatibility recommendations. Compatibility is the responsibility of the user.

Replacement Parts:

  • Please contact our sales department

Model Number Matrix
Model Number Matrix