Krueger Leak Gauge


Ideal for detecting a leak within a containment system. It provides a visual indication of a leak if your inner tank begins to break down.

SKU: N/A Tag:


This at-a-glance leak gauge is a reliable, vertical type leak monitor used for detecting leaks in the annular/interstitial space of a double wall above ground containment tank (ASTs). Its simple mechanical design promotes durability, minimal upkeep, quick installation, and easy/inexpensive repairs.

If you have a monitoring pipe or have a threaded fitting at the top of the interstitial space on a double wall containment tank, this monitor will thread right in. Any liquid seeping into the containment space will cause the float to rise which will provide a visual indication on top of the tank that there is liquid in the interstitial containment area.


  • Calibration Assembly – Inner and outer plastic housings with printed calibration paper between housings.
  • Indicator Tube – Red HDPE plastic.
  • Lock Nut – Red plastic to hold calibration assembly in place.
  • Duro Nitrile Gasket – On which flanges on base of calibration assembly are firmly seated to prevent leakage.
  • Aluminum Die Cast Bushing – Fits standard 2″ NPT tank flange.
  • Float Arm Assembly – On gauges 42″ and under, 1/8″ aluminum rod connected to indicator on top and float on bottom. On gauges 43″ to 76″, 2 pieces of 1/8″ aluminum rod connected in middle by compression union, on the bottom to a float, and on top to an indicator. On gauges 77″ to 170″, 3 or more pieces of 3/16″ aluminum road connected by compression unions, attached to float on bottom and indicator on top.
  • Plastic float (76″ and under) – High density polyethelene float 1.5″ diameter x 3.25″ long.
  • Cork float (77″ and over) – Poly coated cork float 1 7/8″ diameter. Length of float varies with length of gauge.


Additional information

Tank Size

125 gallon, 250 gallon, 500 gallon, 1000 gallon, 1500 gallon, 2000 gallon, 2500 gallon, 3000 gallon, 4000 gallon, 5200 gallon, 6000 gallon, 8000 gallon, 10,000 gallon, 12,000 gallon