Superior Signal Smoke Systems have been an industry leader for over 60 years, with Smoke Fluid Systems, Smoke Candles and Smoke Blowers all engineered specifically for Sewer/Pipe Testing. Superior Smoke is the fast, inexpensive and easy way to find the most common sources of plumbing faults or surface inflows. The Superior Models 20 & 25 Smoke Blowers are specifically designed to blow smoke through sewer lines or other openings.