Built to Outlast.
Engineered to Outperform.
Built to Outlast.
Engineered to Outperform.
If you’re shopping for a sewer jetter, it’s easy to get snarled up in the specs. One machine has a bigger water tank. Another has a different trailer. Somebody else claims more PSI. Before long, you’re comparing everything except the part that’s going to matter most when you get into the field: The pump.
Yes, you’re going to have to choose what kind of jetter setup makes the most sense for your jobs. A Van Pack fits a different business than a truck-mounted jetter. But before you even get to that point, you need to understand the difference in sewer jetters is really all about the pump.
A sewer jetter, sometimes called a hydro jetter, hydro jetting machine, or water jetter, uses high-pressure water to clear blockages and clean pipes. Unlike a drain snake or sewer cable that simply punches a hole through a clog, a jetter uses high pressure water pushed through specialized nozzles to break up the blockage, flushes debris out of the line, and clean the entire pipe wall. The most common jetters in the industry offer 18 GPM at 4,000 PSI.
They’re used every day to remove:
Walk through any equipment show and you’ll see a lot of machines that look almost the same. The trailers are different colors, tanks are different sizes, and toolboxes move around. But underneath, most professional sewer jetters are built around one of two pump designs.
If you’re planning to run the machine for years, this is the decision that will matter most.
Triplex pumps have been around for a long time. They’re proven, reliable, and capable of producing extremely high pressure. For applications that truly need that kind of pressure, they’re a great solution. The tradeoff is maintenance.
Triplex pumps rely on packing, seals, valves, and other wear parts that regularly wear out through normal use.
Instead of relying on plungers, packing, and seals to pressurize the water, radial piston diaphragm pumps use a flexible diaphragm that separates the water from the pump’s drive mechanism. By isolating the moving parts, wear is dramatically reduced, service intervals are much longer, and the pump runs smoother throughout its life.
A typical triplex pump may need major service around every 100 to 200 hours, depending on how it’s used and maintained. A radial piston diaphragm pump is designed to go up to five times longer between major service intervals.
Think about what that could mean to a business or a city. Over the life of the machine, those extra hours add up to fewer rebuilds, fewer repair bills, less downtime, and a lot more billable work.
Plumbing crews work hard, but mistakes happen. Especially when crews experience turnover. Every owner will say their crew will tear up a machine and occasionally run it dry. Maybe for a few seconds, maybe longer. Only the radial piston diaphragm pump has true run-dry capability. Unlike a triplex that will tear itself up if it runs dry for any length of time, you can run a radial piston diaphragm dry for a long time with no damage at all.
All of this is why the radial piston diaphragm pump delivers the lowest total cost-of-ownership in the industry. Not because the machine never needs service, but because it spends far less time needing it.
| What Matters | Conventional Triplex Pump | Radial Piston Diaphragm Pump |
|---|---|---|
| Major Service Intervals | Every 100–200 hours (typical) | Up to 1,000 hours |
| Dry-Run Capability | No | True run-dry capable |
| Routine Wear Parts | Packing, seals, valves | Diaphragms, valves, pressure discs |
| Cost of Ownership | Higher over time | One of the industry’s lowest |
| Pump Warranty | 1-2 years, typically | 5 Years |
Once you’ve decided what pump you want, choosing the setup becomes pretty straightforward. At Harben, every setup uses the same radial piston diaphragm pump, so you’re not choosing between different levels of performance, you’re simply choosing how you bring the pump to the job.
A Van Pack is often the easiest way to get into professional jetting. Everything stays together in one service vehicle, making it a great fit for plumbing companies adding drain cleaning or building a dedicated jetting division.
Trailer jetters carry more water and can easily move between multiple crews. As demand grows, they give plumbing companies the flexibility to keep more trucks working without buying a dedicated jetting vehicle for each crew.
Skid mount jetters are installed into contractor trucks, utility bodies, and municipal fleet vehicles. They’re a great option if you already have the truck you want and simply need professional jetting capability.
Truck-mounted jetters carry the most water, reducing refill trips and keeping crews productive all day long. They’re ideal for contractors and municipalities that spend their days cleaning larger sewer systems.
Portable jetters, like the Harben Industrial Jet Cart, are built for places bigger machines can’t reach. They’re ideal for industrial plants, mechanical rooms, and other indoor applications where portability matters more than water capacity.
Every manufacturer can build a strong trailer and mount a water tank on a truck. The real difference is the pump. The pump makes the difference in whether you’re rebuilding the machine every few months or still out cleaning pipe while someone else is back in the shop.
Every Harben jetter from the Industrial Jet Cart to the 4018 Truck Mounted is built around the same radial piston diaphragm pump. That means whichever rig fits your business, you’re getting the same true run-dry durability, the same service intervals that can stretch up to five times longer than a traditional triplex pump, the same five-year pump warranty, and one of the lowest long-term costs of ownership in the industry.
Choose the pump that keeps your business running 5 times longer.