Tank Storage and Reservoirs for Clear Water

Key Considerations in Valve Selection

Water Quality: For clear water, valves should be constructed from corrosion-resistant materials such as stainless steel to prevent contamination and ensure longevity.
Operation and Maintenance: Ease of operation, accessibility for maintenance, and availability of spare parts are important factors when choosing valves for tank storage and reservoirs.
Pressure and Flow Requirements: The valve must match the system’s pressure and flow characteristics to avoid operational issues and ensure effective control.
Size and Installation: Valve size should be compatible with pipe diameters and tank outlets. Installation location (above or below ground, accessibility) also influences valve choice.
Compliance and Standards: Valves should meet local and international standards for potable water systems, such as NSF/ANSI, AWWA, or ISO certifications.

Applications in Tank Storage and Reservoirs

Inlet and Outlet Control: Valves regulate the filling and emptying of tanks and reservoirs, allowing operators to control water inflow and outflow as needed.
Isolation for Maintenance: Gate or ball valves are used to isolate tanks or sections of the reservoir for cleaning, inspection, or repair without disrupting the overall water supply.
Overflow Protection: Valves help manage overflow events by diverting excess water safely, protecting infrastructure, and preventing environmental contamination.
Level Regulation: Automated valves, such as float or solenoid valves, can maintain desired water levels and prevent overfilling or underfilling of tanks.
Backflow Prevention: Check valves are installed to prevent reverse flow and potential contamination of the stored clear water.

Common Types of Valves Used in Water Storage Systems

Gate valves

Widely used for on/off control in large diameter pipes, gate valves offer minimal flow resistance when fully open and are ideal for isolating sections of a tank or reservoir.

Butterfly Valves

Compact and lightweight, butterfly valves are suitable for throttling and regulating flow. They are often used where space and weight are considerations.

Needle Valve (Axial Flow Control Valves/Plunger Valves)

Needle valves are specialized flow control valves designed to provide precise regulation of water flow and pressure. Needle valves are often used in applications requiring accurate flow control, such as at pump stations, reservoirs, or pressure reducing installations and water distribution control.

Ball and Spherical Valves

Simple to operate and highly reliable, ball valves provide tight shutoff and are often used in smaller diameter pipelines or for quick isolation.

Check Valves/ Non return valves

These valves prevent backflow, ensuring that water only flows in one direction, which is crucial for maintaining water quality and preventing contamination.

Air valves

Used to release trapped air or allow air into the system during draining, these valves help protect tanks and pipelines from pressure surges and vacuum conditions.