Versatile MULTIBLOCK® Filter Underdrain

MULTIBLOCK® underdrains deliver to you…

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

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.