The Watts TK-DL Computerized Backflow Tester is an advanced piece of test equipment designed to make pressure and differential gauges obsolete in the testing of backflow assemblies.

• 美国瓦茨TK-DL计算机化防回流阀检测器是一种先进的检测设备，专用于在检测防回流阀总成时普通压力和压差表失效的场合。