Accessible MULTICRETE™ II Filter Underdrain

MULTICRETE™ II Underdrains provide a high quality, low cost, engineered product that is economical and versatile. MULTICRETE™ II Underdrains provide a low headloss underdrain with plenum access. MULTIWASH™ backwash is possible using this system.

The MULTICRETE™ II underdrain is a monolithic cast in place underdrain with open plenum design. It can be designed for media retaining or support gravel applications. Special nozzles allow for combined air/water backwash or water only backwash.

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Features and Benefits

Features

Corrosion resistant materials
Open plenum design
Media retaining design
Monolithic formwork construction

Benefits

Long product life
Lower headloss
Greater hydraulic capacity
Access to underdrain
Eliminates support gravel
Reduced filter depth
Fewer people needed to install
Structural strength with few joints

The accessible MULTICRETE™ II underdrain allows interior inspection after installation. The open plenum design provides for uniform distribution at high rates of air and water during backwash. It readily combines with the unique MULTIWASH® baffle to provide unlimited air-water backwashing. MULTICRETE™ II is NSF Standard 61 approved.

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