How long will a typical sewer line jetter hose last? That is about as easy to answer as trying to estimate when a jetter’s pump will break down.
A hose is a consumable; it’s not going to last forever. There is no hard-fast rule for how long a hose will last. Hoses are subjected to a harsh environment. Operators often don’t know what they are getting into, and can destroy a hose the first time they put it into a pipe. On the other hand, there are some simple and relatively inexpensive things you can do to prolong the life of your hose. First and foremost – shield your hose from sharp edges on things like manhole covers, corrugated pipe or broken pipes using a protective sleeve, generally known in the industry as a tiger tail.
Every time you use a hose without a tiger tail, you run the risk of tearing the outer jacket of the hose. Once you get a nick in the outer jacket it reduces the hose’s effectiveness. Tiger tails come in various diameters and lengths. Each one includes a tie-off rope that workers attach to a fixed object near a friction point, like the edge of a broken pipe in the opening of a manhole trough. The tiger tail stays in one place while the jetter hose moves through it, unimpeded by sharp edges. Another useful tool is a manhole roller guide, which also protects the hose from sharp edges as it passes through the manhole opening. Some companies make manhole rollers for use both at street level and down inside the manhole where the hose enters the pipe at the trough.
Regularly cleaning hoses helps extend their life, so operators should wipe down a hose as it is being pulled back to the hose reel. Hoses can come into contact with damaging chemicals and waste gases. You don’t want residue from waste eating away at the hose. Having a clean hose also minimizes odors when storing in a closed space. Also, it is difficult to detect nicks and cuts on a hose that is grimy and dirty.
Another suggestion is for operators to use a leader hose, typically a 10-15 foot long rubber hose that attaches to the front end of the jetting hose at one end and the jetter nozzle at the other end. This hose is also called a sacrificial hose because it takes the brunt of the load as it goes through the pipe. Because it is rubber, a lead hose is more flexible than the thermoplastic-coated jetter hose, so it can make its way through bends in pipes easier. The leader hose is cheaper to replace than the jetter hose and you can afford to have 2-3 extras on hand in case you damage one in the field. Just grab a spare from the shop, unscrew the old one and screw on the new one and you’re up and running again. The leader hose also boosts jobsite safety. When operators see one emerge from the line they know the end of the hose will follow shortly, alerting them to power down the pump.
Finally, another way to increase the life of your hose is to regularly inspect every inch of the hose for nicks and cuts. It is suggested that you perform an inspection at the start or end of a job, or even both. Some supervisors have their crew take the hose completely off the hose reel every week laying it out in the parking lot for a thorough inspection. If a worker finds a defect, they tag it out and the hose gets repaired or replaced. This is very time consuming but may well be the most valuable half-hour that the operators spend each week. There is a lot at stake when a hose goes. The braid on a jetter hose is like a suspension bridge; when the strands starts to break away, eventually the bridge is going to fail.
It is understandable that operators may not want to take the time to inspect their equipment and especially the hose. This inspection can help prevent costly damage and terrible accidents though. Also note that hose repairs can not be done with a hose clamp and duct tape. There is no way that’s going to hold back water at 3,000 psi. Take the time to inspect and be safe.
OMAG has a grant for Sewer Maintenance Equipment. To learn more about this grant go to www.omag.org, click on “free services” then “grants and scholarships” and look for Sewer Maintenance Equipment Grant.
