Flygt - Check Valves

Introduction to Flygt Check Valves

Flygt’s check valves stand out for their robust construction and low-maintenance design, ensuring dependable backflow prevention in critical systems. Engineered for durability and efficiency, Flygt check valves help minimize downtime and protect equipment in environments ranging from wastewater treatment plants to construction sites. Whether managing sewage, stormwater, or industrial fluids, Flygt’s check valves are a trusted component in maintaining smooth, cost-effective operations.

Why Choose Flygt Check Valves?

Engineered for reliability, Flygt check valves offer a smart solution for wastewater and pumping systems. Built to withstand tough conditions, they feature a clog-resistant, streamlined design that keeps pressure loss to a minimum, even when handling fluids with high solid content. With corrosion-resistant materials and durable seals, these valves are made for long-lasting performance with minimal maintenance. Available now from our Canadian warehouse. Explore the available options below:

Flygt Flanged Ball Check Valve

Flygt Flanged Ball Check Valves are designed for sewage and wastewater applications, offering low friction loss, maintenance-free operation, and a low total cost of ownership. Featuring a full port design for maximum flow and minimal head loss, these valves include a self-centring EPDM-coated aluminum ball for reliable closure at low pressures. They support a working pressure of 200 PSI and provide top-entry access for easy inspection and cleaning. Available in 2", 3", 4", and 6" sizes.

FAQs

1. What is the main purpose of a check valve in a water supply system?

A check valve, also known as a non-return valve, is used in water systems to ensure unidirectional flow, preventing backflow that can contaminate clean water. Its primary purpose is to allow water to flow freely in one direction and automatically block it if it tries to reverse, maintaining pressure stability and protecting pumps, meters, and other components.

2. How does a check valve prevent backflow in municipal water lines?

Check valves contain an internal disc, ball, or flapper that opens when water flows in the correct direction and closes tightly when the flow reverses. In municipal water lines, this mechanism stops used or contaminated water from re-entering the clean water supply, thus preventing potential health hazards and ensuring compliance with water safety regulations.

3. Why might a check valve suddenly fail in a waterworks system?

Check valves can fail due to debris buildup, wear and tear, corrosion, or improper installation. A failed valve might stick open or closed, allowing backflow or obstructing water flow. Regular inspection and maintenance are crucial to ensure long-term reliability and avoid costly system failures or water contamination.

4. Are swing check valves or spring check valves better for water systems?

Swing check valves are commonly used in gravity-fed or low-pressure systems because of their simple design and low resistance, while spring check valves are better suited for high-pressure systems or vertical installations, as they close faster and reduce water hammer. The best choice depends on flow direction, pressure, and orientation.

5. Can a check valve reduce water hammer in pipelines?

Yes, certain types of check valves, particularly spring-loaded or silent check valves, are designed to close quickly and reduce the pressure surges known as water hammer. By preventing sudden flow reversal, these valves protect pipes and fittings from shockwaves that can lead to long-term damage or leakage.