The Conbraco 40-100/40-100T is a double check valve assembly ( DCA ). It was available in ¾” – 2” sizes and was produced from 1989-2012. Originally, the 40-100 did not come standard with replaceable check seats but was available as an option. In 1994 replaceable check seats became standard. The 40-100 was produced in a wye pattern or top entry design. In 2002, the wye pattern was discontinued. The body was made of bronze.
American Backflow Products Company