Versatile MULTIBLOCK® Filter Underdrain

MULTIBLOCK® Underdrains provide a high quality, low cost, engineered product that is economical and versatile. MULTIBLOCK® Underdrains can be fitted with the unique LaserShield media retaining system that eliminates the need for support gravel. Combined air and water backwash is possible using this system.

MULTIBLOCK® underdrains deliver to you…

- Reduced profile underdrain option
- Superior media retention capability
- Uniform distribution of water and air backwash

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Features and Benefits

Features:

HDPE plastic construction
Snap together design
Gasket seal between blocks
Laser Shield™ media retention option
Dual lateral design
Integrates with MULTIWASH® backwash

Benefits:

Lightweight
Corrosion resistant
Easy to handle and install
Easier to install
No lubricant needed
Corrosion resistant design
Eliminates support gravel
Minimizes depth required
Uniform distribution
Superior media clean
Unlimited backwash duration

The versatile MULTIBLOCK® underdrain has been installed in concrete and steel gravity filters for a number of applications. Packaged treatment units as well as large cluster filters have benefited from the design. It readily combines with the unique MULTIWASH® baffle to provide unlimited air-water backwashing. Your old clay tile underdrains are ideal candidates for replacement with MULTIBLOCK underdrains which are NSF Standard 61 approved.

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