Raven Filter Media Manager

Are you getting 25% expansion throughout your filter during backwash?

The US EPA recommends 20% to 25% filter bed expansion to adequately clean the filter media (anthracite, sand). Failure to expand the bed sufficiently will result in "mud balls" that degrade the filter's ability to trap dangerous microorganisms such as Cryptosporidium and Gyardia cysts. With the portable Media Expansion Measurement System, Raven offers an affordable solution for water plants of all sizes.

HOW IT WORKS:

Lower the sensor to rest on the compacted media bed prior to backwash.
Press Zero on the controller to set the counter to 0.
As the dirt and debris is being evacuated, the red light will illuminate.
When the backflow water becomes clear, the media will begin to rise with expansion.
Raise the sensor just until the red light goes out. Repeat until the bed finishes expanding.
At this point note the amount of expansion on the display.

CABLE LENGTH:
Standard cable length is 25 feet (7.6m). Call for custom lengths.

RAILING CLAMPS:
One railing clamp is included. Choose from round railing clamp or square railing clamp. These clamps are interchangeable.