Water Level Indicators are used to monitor the level of water inside a storage tank. They provide a simple, reliable, and highly visible indication of the actual water level without requiring any electrical power supply or electronic monitoring system.

Purpose

The main area of application for water level indicators includes various potable and non-potable water storage systems used in commercial, industrial, and residential buildings.

• Potable GRP / FRP water tanks
• Potable RC / Concrete water tanks
• Potable SS316 water tanks
• Non-potable water tanks such as cooling tower make-up water tanks and break water storage tanks
• Fire water storage tanks including sprinkler tanks, hydrant tanks, and hosereel water storage tanks

Design

Water level indicators supplied and installed by Waves Fluid Engineering Pte. Ltd. are manufactured using high-quality aluminium alloy materials that provide excellent strength while maintaining lightweight characteristics. The frame is specially designed to protect the acrylic tube from accidental damage while allowing clear visibility of the water level.

Adaptors, gate valves, and mini-valves are customized to ensure easy installation, replacement, and long-term operation.

All materials are carefully selected to ensure long-term performance in humid and water-rich environments.

Available Sizes & Variants

Water level indicators supplied by Waves Fluid Engineering Pte. Ltd. are available in heights ranging from 1 metre to 10 metres. For indicators exceeding 6 metres in height, the system is supplied in two sections and assembled onsite.

The aluminium water level indicator is a robust mechanical visual monitoring system specifically designed for water storage tanks. It allows facility managers and maintenance teams to instantly determine water levels without depending on electronic sensors, displays, or power supplies.

Working Principle

The water level indicator operates based on the Principle of Communicating Vessels (Pascal’s Law in hydrostatics).

• The clear acrylic tube is connected hydraulically to the bottom section of the water tank.
• As the water level inside the tank rises or falls, the water level inside the acrylic tube changes proportionally.
• The transparent Ø25mm acrylic tube allows operators to easily observe the actual water level.
• A calibrated measurement scale in metres provides quick and accurate level indication.
• A mini ball valve or gate valve is installed at the bottom connection to isolate the indicator during maintenance.

This mechanical system provides continuous, real-time, and highly accurate water level indication without the need for electricity.

Material Specifications & Benefits

• Acrylic Tube – High clarity, impact resistant and UV stabilized for long service life.
• Aluminium Frame – Powder coated or anodized for corrosion resistance.
• Brass Fittings – Excellent corrosion resistance and compatibility with potable water.
• Mounting Brackets – Adjustable slotted design for easy alignment during installation.

Advantages

• Zero power consumption
• Fully mechanical and fail-safe operation
• Easy readability from a distance
• Low maintenance requirements
• No sensors, batteries or wiring required
• Cost-effective alternative to ultrasonic and radar level sensors
• Reliable operation during power failures
• Easy troubleshooting and visual inspection
• Professional and aesthetically pleasing aluminium finish

Warranty for Water Level Indicator Installed / Supplied

Waves Fluid Engineering Pte. Ltd. assures our clients that all water level indicators supplied and installed are sourced from reputable manufacturers and are backed by a 12-month warranty against manufacturing defects and workmanship issues.

Quotation

Please contact us at +65 94870446 or email us at sales@wavesfluid.com.sg for further details and discussions.