ChillWaves PVC True Union Ball Check Valve with Full Port，3/4" Slip Socket，Schedule 80，ASTM EPDM O-ring，One-Way Non-return Check Valve for Backflow Prevention(4-PACK)

Product DescriptionThis PVC True Union Ball Check Valve is designed to prevent backflow and ensure the proper operation of fluid handling systems. The true union construction allows for easy disassembly without disturbing the existing piping layout, making cleaning, inspection, and replacement simple and efficient.Inside the valve body, a solid PVC ball moves with the flow. When fluid flows in the intended direction, the ball lifts off the EPDM seat, allowing full-port flow. When flow stops or reverses, the ball returns to the seat, creating a tight seal that prevents backflow. This reliable one-way action helps protect pumps, filters, and other critical equipment from damage caused by reverse flow.This valve is made of high-quality PVC, is lightweight and easy to install, and is resistant to acids, alkalis, and moisture, ensuring long-term, stable operation even in harsh environments.Important Installation Note: This valve is designed for vertical installations with flow moving upward. It must be installed with the flow arrow clearly marked on the valve body pointing in the direction of flow. Do not install the valve upside down. (Note: This valve does not contain a spring.)This valve is suitable for a wide range of residential, commercial, and industrial high-pressure applications, including commercial water supply and drainage systems, irrigation systems, swimming pools, outdoor projects, and cold water supply lines.

• TRUE UNION DESIGN – Features a true union structure that allows for easy disassembly without breaking the piping connection, making cleaning, inspection, and replacement quick and convenient.
• RELIABLE BACKFLOW PREVENTION – The precision-engineered PVC ball moves with flow direction to seal tightly against the seat, effectively preventing reverse flow and protecting pumps, filters, and other equipment from damage.
• MATERIAL – Made of high-quality PVC, it is cold-resistant, corrosion-resistant, and UV-resistant. The thickened wall design provides crack resistance and high pressure tolerance, ensuring long-lasting durability. The smooth inner surface prevents scaling and effectively reduces friction.
• VERTICAL INSTALLATION REQUIRED – Designed specifically for vertical installations with flow moving upward. Must be installed with the flow arrow pointing in the correct direction. (Note: No spring inside.)
• VERSATILE APPLICATIONS – Ideal for high-pressure applications, it is suitable for residential and commercial high-pressure systems, including indoor plumbing, outdoor irrigation, sprinkler systems, above-ground pools, outdoor projects, and cold-water supply lines.