High-Precision Prefabricated Reinforced Concrete Nozzle Slabs
Nozzle slabs play a role in supporting the filter media layers and evenly distributing air and water in the underdrain system.
In backwashing, especially in air-water backwashing processes, the key to uniform air and water distribution lies in the levelness of the nozzles, and its prerequisite is the levelness of the nozzle slabs.
ZCEN has developed an installation methodology using high-precision steel-mold reinforced concrete nozzle slabs with high-strength sealant-sealed jointing process, to overcome the drawbacks of poor levelness, poor air-tightness, and difficulty in vertically installing nozzles in conventional nozzle slabs. This technology has been widely adopted in new water plant installation and retrofitting and upgrading of existing water plants.
Nozzle slabs play a role in supporting the filter media layers and evenly distributing air and water in the underdrain system.
In backwashing, especially in air-water backwashing processes, the key to uniform air and water distribution lies in the levelness of the nozzles, and its prerequisite is the levelness of the nozzle slabs.
Product Features
High precision and accurate geometric dimensions
High bidirectional load-bearing strength and excellent bending resistance
Good sealing between nozzle slabs and between nozzle slabs and tank walls; stainless steel anchor bolts and anchoring elements do not contaminate water, ensuring a long service life
Technical Specifications
Standard dimensions: 1000×1000×100 mm or customized according to design requirements
Levelness deviation of the single nozzle slab surfaces shall not exceed ±2 mm
Thickness deviation of the nozzle slab shall not exceed ±1 mm
Vertical deviation of the right-angle edges of the nozzleslab shall not exceed ±2 mm
Concrete strength: C30, double-layer, two-way reinforcement with Φ12 mm threaded steel bars
