Float Activated Tank Gauge

  • Provides direct level indication for bulk product tanks or barrels/drums.
  • Indicator level in sight glass matches level in bulk product tank or barrel.
  • Provides the same functionality as a sight glass, but in a float activated variant.

Based on Series 570 Cooper’s Hawk

  • The Series 570F Greyhawk is based on the economical and reliable Series 570 Cooper’s Hawk.
  • Adds indicator, mounting bung, stillwell and float.

Top Mounted Gauging

  • Use of float and still well instead of direct liquid indication allows the Series 570F Greyhawk to be mounted on top of tanks or barrels.

Integrated Stillwell and Float

  • The aluminum stillwell provides guidance and protection for the float, ensuring accuracy and reliability.
  • The LLDPE float is suitable for most petrochemical liquids, including hydrochloric acid, up to 60°C.
  • The mounting bung has a 3 MNPT connection, and will fit in any opening with at least 3 in. clear diameter.


Measuring Principle Float + Sightglass
Maximum Height 96in. [8 ft, 2.44 m]
Process Connection: Std 3 MNPT
Process Temperature -40°C to 60°C
Pressure 0.15 bar [2 psi]

Related Documents


Download Brochure

Ordering Information

Series 570F Greyhawks are build to order from stock parts.  There are no standard or stock sizes.

  1. Specify “Series 570F Greyhawk Tank Gauge”
  2. Specify Tank Inside Diameter
  3. Specify Height from top of mounting nozzle to floor of tank.

See the part number matrix on the brochure for more information.

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