Who We Are

Test Gauge® & Backflow Supply was formally known as Test Gauge Industries. The company was purchased in 2000 and moved from Mt. Prospect, IL to Elgin, IL. In 2003 the decision was made to take a calibration company into a full master parts distributor, which then led to Test Gauge® being one of the nation's fastest growing parts supplier.

We are the preferred source for backflow prevention products and services. Test Gauge, Inc. is one of the nation’s fastest growing suppliers of backflow products, repair parts, backflow repair kits, and calibration services. Test Gauge Inc. - The Right Product. The First Time. Guaranteed.

Our superior customer service is unmatched in the industry.  We have 10 locations to serve you better:  Austin, Chicago, Cincinnati, Dallas, Denver, Houston, Indianapolis, Minneapolis, San Antonio and Tampa.  The Test Gauge Team prides themselves on providing excellent customer service, as well as technical assistance to the backflow technician.  We not only listen to our customers but when our customer asks for a product we do not say "we can't get it" ... we find a way to get it.  Whether it's a repair or installation questions, we can help you get the job done right the first time.  Local experts, National Service ... that's Test Gauge.

We offer Calibration Services, Training Services, Repair Part Sales, Technical Supportand Specialize in Backflow Valve Replacement.