[Durable PVC Valves] This set includes 4 PVC in-line ball valves, built to last. [Universal Compatibility] Designed for indoor and outdoor use. Ideal for sewer lines, landscaping, irrigation, swimming pools, cold water systems, ventilation, waste applications, aquaculture, and more. [T-Handle for Control] The T-shaped handle allows for simple on/off manual control, ensuring quick and safe flow regulation in pipes, valve seats and stem packing, minimizing the risk of leaks.