I. Core Components

1. Panels
   These are the basic units that make up the water tank body, like building blocks.

Material: Made from food-grade resin (such as unsaturated polyester resin) and fiberglass cloth (or roving) through hand-pasting or molding.

Features:

High Strength: The fiberglass provides extremely high tensile strength.

Corrosion Resistance: The resin layer effectively prevents secondary water contamination and resists corrosive substances in the water.

Sanitary: The lining layer typically uses food-grade resin and meets drinking water standards.

Types: Based on their position in the water tank, panels are categorized as follows:

Standard Panels: Used to form the side walls of the water tank.

Bottom Panels: Used at the bottom of the tank, bear the greatest pressure, and are typically thicker or specially reinforced.

Top/Cover Panels: Used to seal the top of the tank to prevent the ingress of dust and insects, and typically have an inspection hole.

Overflow Panels: Located on the side of the top of the tank and connected to the overflow pipe.

Sealing Structure: The panels have stamped flanges with sealing strips around them, and bolt holes are provided for easy assembly and sealing.

2. Sealing Material: Used to ensure a tight seal at panel joints to prevent water leakage.

Type: Typically uses food-grade EPDM rubber gaskets.

Features: Non-toxic, odorless, water-resistant, aging-resistant, highly elastic, and able to maintain a long-lasting sealing effect.

Installation: The gaskets are embedded in the grooves of the panel flanges and compressed when tightened with bolts, creating an effective seal.

3. Metal Fasteners: Used to securely connect the panels together.

Composition: Mainly includes bolts, nuts, and washers.

Material: Typically galvanized steel or stainless steel (such as 304 or 316) to prevent rust and corrosion, ensuring joint strength and durability.

4. Internal Tie Rods: These are critical components for ensuring the structural stability of the water tank, especially for large tanks.

Purpose: Water exerts significant static pressure on the tank walls. The tie rods balance pressure on both sides by pulling against each other, preventing the tank from bulging and deforming.

Material: Typically galvanized steel or stainless steel.

Structure: Consists of a full-length tie rod and fastening nuts at each end.

5. Support Structure
   Foundation: The water tank must be installed on a flat, solid foundation (such as a concrete platform or steel frame). The foundation must be able to evenly support the total weight of the full tank (water volume + tank weight).

Base/Beam: Large water tanks typically have a steel or fiberglass base or support beam at the bottom to evenly distribute weight to the foundation and facilitate cleaning.

II.Supporting Pipes and Accessories

A complete water tank system also includes the following pipes and accessories:

1. Inlet Pipe: Connects to the water source and supplies water to the tank.
2. Outlet Pipe: Connects to the water supply and transports water out. It is usually located above the tank floor to prevent sediment from being sucked out.
3. Overflow Pipe: When the water level exceeds the maximum level, excess water is discharged through this pipe to prevent damage to the tank. It is usually installed at the overflow plate and has an insect screen installed at the end of the pipe.
4. Drain/Sewage Pipe: Located at the lowest point of the tank floor, it is used to drain the tank for cleaning, maintenance, or emergency draining.
5. Breather/Vent: Installed on the top cover, it maintains pressure balance inside and outside the tank, preventing negative pressure from pumping water out and pressure fluctuations caused by temperature changes. It also prevents dust and insects from entering.
6. Manhole/Inspection Hole: Located on the top plate, it is large enough for maintenance personnel to enter the tank for cleaning, inspection, and repairs. 7. Internal and external ladders: Provide easy access to the top of the tank and inside.
7. Water level gauge/liquid level meter: Displays and controls the water level within the tank.

III. Structural Features Summary

Modular Design: Water tanks of varying sizes and shapes can be flexibly assembled based on site and capacity requirements, making transportation and installation easy.

High Strength and Lightweight: Fiberglass offers high strength while being significantly lighter than concrete and steel, requiring less foundation.

Excellent Corrosion Resistance: Smooth interior and exterior surfaces resist algae growth and pose no risk to water quality.

Excellent Thermal Insulation: Fiberglass has a low thermal conductivity, providing a good thermal insulation performance.