With low-cost, automatic, shut-off valves from Hantech, of Santa Fe Springs, Calif., customers can save as much as 15,000 gallons of water a year. With a reinforced diaphragm design, the company is able to offer a lifetime warranty. The valves are designed to shut off at 65 percent of supply line pressure. Manufactured of NSF-listed materials, they are available with either JACO style connections or 1/4?? quick connect. With a polypropylene bracket design, the valves are available in white or black.