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Floating Cover Ball

Updated: 2026-08-06

Overview

Liquid surface covering balls are small, hollow plastic spheres designed to float on the surface of water tanks, reservoirs, and other liquid storage systems. They are widely used in industrial, agricultural, and municipal settings to address issues like water evaporation and contamination. These balls are typically made from high-density polyethylene (HDPE) or polypropylene (PP), materials chosen for their durability and resistance to chemicals and UV radiation. By forming a continuous layer on the liquid surface, they significantly reduce evaporation rates and prevent the growth of algae and bacteria.

Structure and Working Principle

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The liquid surface covering ball is a hollow sphere with a diameter ranging from 40mm to 100mm, depending on the application. Its lightweight design allows it to float effortlessly on the water's surface while maintaining stability even in windy conditions. The working principle is simple yet effective: when deployed in large numbers, the balls create a physical barrier that minimizes direct exposure of the water surface to air and sunlight. This barrier reduces evaporation by up to 90% and blocks UV rays that promote algae growth, making the balls an eco-friendly solution for water conservation.

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Key Features

One of the standout features of liquid surface covering balls is their durability. Made from high-quality HDPE or PP, they resist degradation from chemicals, UV radiation, and extreme temperatures, ensuring a long service life. Another key feature is their buoyancy and stability. The hollow design ensures they remain afloat even in turbulent conditions, while their spherical shape allows them to roll with wind or waves without flipping over. This design also facilitates easy cleaning and maintenance, as debris tends to slide off the smooth surface.

Application Areas

These balls are extensively used in water treatment plants, where they help maintain water quality by preventing contamination and reducing chemical loss through evaporation. They are also popular in agricultural reservoirs, where water conservation is critical. Industrial applications include cooling towers and chemical storage tanks, where the balls minimize evaporation and reduce the risk of airborne contaminants. Municipalities use them in drinking water reservoirs to improve water quality and comply with environmental regulations.

Maintenance and Precautions

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Maintenance of liquid surface covering balls is minimal. Periodic inspection for damage or punctures is recommended to ensure optimal performance. Cleaning can be done with water and mild detergent if debris accumulates. Precautions include avoiding sharp objects during handling and installation, as punctures can compromise buoyancy. It's also important to ensure proper coverage density—typically 90-95% of the surface area—to achieve maximum efficiency in evaporation control and contamination prevention.

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B2B Procurement Guide

When procuring liquid surface covering balls in bulk, consider factors such as material quality, UV resistance, and diameter. HDPE balls are generally more durable and UV-resistant than PP, making them suitable for outdoor applications. Supplier reliability is crucial; look for manufacturers with a proven track record in producing consistent, high-quality balls. Pricing varies based on material and order volume, with discounts commonly available for large purchases. Always request samples to verify quality before placing a bulk order.

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