John Guest Speedfit Straight Shutoff Valves are made from white polypropylene and are equipped with EPDM O-rings. These plumbing fittings can be used with plastic or soft copper tubing and are ideal for a wide range of applications, including reverse osmosis systems, ice makers, home/office coffee and beverage dispensing equipment, hydroponics, and aquarium/aquatic systems. Manufactured with FDA-approved materials, the straight shutoff valves are lead-free and corrosion-resistant and are NSF 61 and 51 certified. The straight shutoff valves are suitable for a wide range of pressures and temperatures and provide excellent chemical resistance. They are rated to 150 psi at 70 degrees Fahrenheit and 60 psi at 140 degrees Fahrenheit. To make a connection, simply push your tube into the fitting by hand; the unique John Guest collet locking system will hold the tubing firmly in place. Disconnection is just as easy and requires no special tools. John Guest Speedfit products blend push-fit and multi-seal technology for reliable leak-proof connections. Simple to install and using fewer connectors than traditional methods, Speedfit products cut installation time by 40 percent. And because no tools are required when installing or demounting the fittings, it’s easy to maneuver in tight spaces or adjust joins.