The quick-connect Watts AquaLock 3/8-Inch by 1/2-Inch Female Swivel Elbow, P-436 lets you efficiently connect water lines without the use of tools. Constructed of a high-performance plastic fitting product called polysulfone, Watts AquaLock Plastic fittings are designed to be trouble-free for years. A locking clip and zero-leak patented O-ring guide provide connection security. Fitting rotates under pressure, making it ideal for vibrating and dynamic applications. Approved for nsf-14, nsf-61, CSA/astm and upc. Holds up to 250 psi. Excellent replacement for quest and flare-it type fittings. Manufactured in China. Includes 25-year limited warranty.