ChillWaves PVC True Union Ball Check Valve with Full Port，1" Slip Socket，Schedule 80，ASTM EPDM O-ring，One-Way Non-return Check Valve for Backflow Prevention(1-PACK)

["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."]