Check Valves

Check valves are used to prevent backflow in fluid handling systems, a critical function to protect pumps, filters, and other equipment from the damage that can be caused by reversed flow. Designed for automatic operation, check valves use internal mechanisms to ensure media flows in only one direction to secure system integrity without the need for manual intervention. Each check valve body is clearly marked with a flow direction arrow for easy installation. Check valves are fundamental parts of many fluid handling systems, from simple sump pump lines to complex industrial chemical feeds.

Our range of check valves includes several engineered options for industrial, commercial, and municipal piping systems that require backflow prevention. Check valves are available in PVC for general use and high temperature CPVC for demanding chemical processing applications.

Available Check Valve Types

• Ball Check Valves: These valves use a free floating ball that seals against a molded seat to block reverse flow. They are ideal for systems that handle viscous liquids, slurries, or suspended solids and can be installed vertically or horizontally. True union models allow for easy maintenance without cutting into the pipeline.
• Swing Check Valves: Feature a flapper or disc that swings open with forward flow and closes against a seat to prevent backflow during system shutdown or depressurization. This design provides minimal flow restriction and is ideal for applications with high flow rates and low pressure such as water distribution, sump discharge, and process piping.
• Spring Check Valves: Feature a spring assisted disc for fast acting, non-slam closure the moment flow stops. This design is perfect for preventing water hammer and can be installed in any orientation.
• Wafer Check Valves: These compact, lightweight valves fit between two flanges for a space saving, economical choice ideal for large diameter piping systems and tight installations. Commonly used in industrial and municipal waterworks, HVAC, and chemical process systems.

Features & Options

• Built Strong: Durable construction in corrosion-resistant PVC or CPVC for broad chemical compatibility and long service life.
• Lasting Seals: High-quality sealing options with EPDM or FPM (Viton) O-rings to match specific chemical or temperature requirements.
• Multiple Connections: Available with socket, threaded, or ANSI flanged end connections for seamless integration into new or existing piping.
• Performance Tested: Rated to handle pressures and temperatures according to valve type, material, and application.

Common Industry Uses

Check valves are commonly used in pipelines across various industries, including water and wastewater treatment, chemical manufacturing, aquaculture, swimming pools and spas, and building services such as HVAC systems, plumbing, fire protection, and irrigation in commercial properties. They are also often installed in high reliability operations such as data centers, where they help safeguard cooling and fluid distribution lines from backflow events.

Ensure your system’s reliability and safety—select the right check valve from our lineup of proven, professional grade products.

Check valves are used in systems to prevent backflow. The valves can come equipped two different ways. The first way is with a floating ball in it that will check up inside the valve once the flow is stopped in the system. The other way this valve is manufactured is using a swing check method. The valve comes with a flap inside of it that will allow media to flow through a certain way then the flap will close once the flow is shut off to prevent the media from changing directions. This valve will not allow backflow into the system when installed properly. The check valve will come with an arrow on it to denote which direction the flow is allowed to move.