Cleaning clogged drains can be a substantial job.

Restaurants put undue stress on their drain systems with all of the grease and food waste they discard every day, requiring heavy-duty equipment to remove troublesome blockages.

Drains and pipes connected to homes or businesses are constantly infiltrated by root systems, clogging them severely.

When blockages like tree roots or a longtime buildup of grease come into play, chemical solutions do no more than tickle blockages. This is why there is a wide variety of industrial drain cleaning devices on the market today — there is a need for machines that can clean severely blocked drains quickly, cheaply and efficiently.

Types of machines

Industrial-strength drain cleaning machines can be divided into roughly three types: hydrojetting machines, drain snakes and power rodding machines.

Hydrojetting removes scale, grease and other debris that have built up inside the pipe walls over time. Drain cleaning machines using this method work in more or less the same basic way. First, the operator inserts a hose that’s connected to a tank of water into the clogged pipe. The hose can withstand the high-pressured water that’s sent into the pipes, and a specialized machine pressurizes water from the tank. This hose then delivers a high-pressure jet of water into the pipe, the pressure of which varies depending on the condition of the pipes. In general, machines may pressurize the water up to 5,000 psi or more and deliver as many as 20 gallons of water per minute, and the flow works with gravity to remove the blockage. This type of machine can be quite effective at drain cleaning, but it does have downsides, including freezing in cold temperatures and the various dangers that can come with using high pressure.

Perhaps the most common kind of drain cleaning machine is called a drain snake. Drain snaking has a simple operation that is often effective, especially for home plumbing use. Industrial-strength drain snakes are, more or less, a long spring cable with a corkscrew on the end, attached to a motor. The cable is inserted into the clogged pipe, and the motor feeds the cable into the pipe. With luck, the cable or corkscrew at the end snags any blockages in the pipe and can then be pulled out with the blockages. This kind of drain cleaning machine is common, but it’s often not suitable for more challenging drain cleaning applications.

The third type of drain cleaning machines work via a method known as “power rodding.” Developed as an alternative to drain snake machines, power rodding systems use a flexible metal cable that threads into drain systems and around bends and joints. A cleaning head with very sharp teeth is installed at the leading end of the cable. This cleaning attachment is sized to the diameter of the pipe being treated. An electric motor rotates the cable, causing the sharp cleaning head to turn at a high rate of speed. This action obliterates the obstruction blocking the pipe, shears off any protrusions such as tree roots and shaves away years of sludge buildup. The high-speed cutting tool shreds the obstructive material blocking the pipe into small fragments that are easily flushed away when a flow of water is introduced into the pipe.

While all three of these methods are viable depending on the application, all three have downsides and issues. However, one technology — flexible shafts — when applied to drain cleaning machines can help to rectify many of these issues.

Flexible shafts

A flexible shaft is a precisely defined and configured nested group of springs, tightly wound so that it has torsional, or rotational strength, as opposed to the tensile strength found in standard wire rope or cable.

What makes flexible shafts useful for drain cleaning is that they can bend, but also still rotate. In other words, a flexible shaft transmits rotary motion much like a solid shaft, but it can be routed over, under and around obstacles that would make using a solid shaft impractical.

Flexible shafts are used in a number of applications, including advanced aerospace technologies. Their flexibility, combined with tensile strength, makes flexible shafts a force in the tight, twisted environments often encountered in drain cleaning.

When compared to other drain cleaning technologies, drain cleaning machines using flexible shafts are advantageous in that they are smaller, lighter and more flexible; easier to clean; and enable the use of a camera in drain cleaning.

These characteristics are helpful in two ways. First, the low weight and size is useful primarily for the operators of drain cleaning machines in using and transporting the equipment to the job site. The cables traditionally used in drain cleaning can be large and heavy, as well as difficult to transport. In addition, traditional drain cleaning cables, which more or less resemble extremely long, tightly wound open springs, are not very flexible. This can make maneuvering the cables through drains difficult. However, flexible shafts can be useful in applications in which the clogged pipes are particularly bendy or hard to navigate with the stiffer traditional cables.

Another advantage flexible shafts have over traditional drain cleaning cables is that they are exceedingly easy to clean. Traditional cables are like large hollow springs — and springs are open to the air, so as the cable moves through the dirty drain, unclogging debris, that debris becomes lodged in the cable. Being that these cables are long and tightly wound, it’s a hassle to maintain them and keep them clean. Flexible shafts, on the other hand, are covered in a protective casing, making cleanup after use much easier.

Lastly, flexible shafts can be advantageous to use over other drain cleaning methods in certain situations because they clean drains without water, which enables the use of a camera. When hydrojetting, camera use is impossible due to the high volume of pressurized water used. Cleaning a drain using a machine based around a flexible shaft (or other dry cable) allows a camera to be fed into the drain just behind the spinning end of the cable. This can be helpful, as it allows you to see what exactly is blocking the pipe, enabling you to adjust your cleaning method if need be.

Clog clearing

One example of flexible shafts being used in drain cleaning to great effect is their use by Clog Squad, a Michigan-based drain cleaning contractor. According to Clog Squad, it had been searching for a lighter, safer and easier way to clean drains and found it in the flexible shaft.

The Clog Squad’s Clog Dog drain cleaning machine is based around the use of a flexible shaft to clean drains, and the use of flexible shafts with the Clog Dog has made the job cleaner, safer and much more effective.

Clog Squad uses flexible shafts from S.S. White Technologies. The manufacturer ensures that its flexible shafts are always designed to exact specifications using proprietary software. The use of these flexible shafts has enabled Clog Squad great success while drain cleaning.

All of the three main methods for drain cleaning have a place in various applications. Now, it’s clear that flexible shafts are a light, powerful, clean and effective new method of cleaning drains that can serve as an excellent option in all kinds of industrial drain cleaning applications.