This standard covers backwater prevention systems that use sensors, controls and mechanisms for
the prevention of backflow for sanitary drainage and storm systems and specifies minimum requirements
for materials, mechanical, electrical, performance tests and markings.
The purpose of this Standard is to enhance health and safety by:
a) Specifying acceptable criteria for sensor operated backwater prevention systems;
b) Serving as a guide for producers, distributors, architects, engineers, contractors, installers,
inspectors and users; and
c) Promoting understanding regarding materials and manufacturing of sensor operated
backwater prevention systems.
This product can be obtained for free download at the following web address: http://canada.ul.com/ulcstandards