This Midline Valve PVC Check Valve Is the Ideal Choice for Flow Control in Your PVC Pipelines. It Features a Spring Loaded Check, Smooth Handle, Multiple Approvals, and Secure Connections. Manufactured with the Highest Quality Materials and Workmanship, it will serve your Plumbing Needs Faithfully. LEAK-FREE: Features Secure, Leak-Free FIP Connections STAINLESS STEEL SPRING LOADED CHECK: Prevents Backflow in Your Cold Water Pipes; Not Recommended for Potable Water SPECIFICATIONS: Cracking Pressure @ .5 PSI; 150 PSI at 73°; Temperature Range 41°- 140°; ISO 9002 Approved Manufacturer; ANSI.B1.20.1 and ASTM F1970 Approved IDEAL FOR FLOW CONTROL IN: Landscaping Sprinklers, Pools, Water Park, Aquarium, ETC. Can Be Installed Vertically and Horizontally. PVC PIPING: PVC Piping Systems Feature Improved Performance, Increased Safety, and Better Rust and Corrosion Resistance when Compared with Steel Piping Systems ⚠ California Proposition 65 Warning: This product is known to the state of California to cause cancer, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.