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Graf Optimax® Pro Internal Filter
Graf Optimax® Pro Internal Filter

Internal self-cleaning cascade filter for underground cisterns and above-ground water tanks. Suitable for roof areas up to 3,750 sq. ft.

Product Code: 340037

Currently in stock

Web Price: $559.95

Black color for above-ground tanks
Optimax black option + $25.00 


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Optimum cleaning performance with maximum water yield

  • Filter specially developed for rain water harvesting
  • Patented filter technology
  • Low maintenance; self cleaning
  • TÜV safety-tested
  • Space saving filter technology integrated in the tank
  • Can be installed on top of above-ground tanks
  • Filter housing can be removed without tools to inspect tank
  • Transparent cover for easy maintenance
  • 4” PVC connections
  • Can be fitted with Opticlean cleaning unit
  • Only 6.5” height offset between inlet and outlet
  • Optimum cleaning performance with maximum water yield
  • Provides over 95 % water yield

** Also available in black color for use in above-ground applications ($25 additional cost for UV additives).



Optional Opticlean Sprayhead Function


Graf Optimax filter technical drawing View Technical Drawing of Graf Optimax® Internal Filter

Opticlean sprayhead Optional Opticlean® filter sprayhead

Graf Optimax Liftout Handle Optional Liftout Handle Extension


Download Installation Manual

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