"NASSCO Tier 3" is the closest thing the jetting industry has to an efficiency standard — and most nozzles sold online don't come close to it. If you write bid specs, run a combination truck, or just want to know why two nozzles with identical fittings clean completely differently, this page explains exactly what the rating means, how it's earned, and which KEG nozzles carry it.
What NASSCO actually says
The National Association of Sewer Service Companies (NASSCO) publishes the Jetter Code of Practice, which classifies sewer nozzles by fluid efficiency — how much of the energy your pump produces actually arrives at the pipe wall as cleaning force. Under that classification, a nozzle with an efficiency rating of 80% or higher is a Tier Three nozzle. Several KEG nozzles exceed 95% — the KEG Royal reaches 98% and the Torpedo 97%, which is why both carry the Tier Three Fluid Mechanics designation.
Where your machine's power actually goes
Pressure is made at the pump, but cleaning happens at the nozzle. A cheap factory-drilled orifice tears the water stream apart — turbulence, misted spray, wasted thrust. As little as ~30% of your machine's power reaches the pipe wall. A Tier Three nozzle uses machined internal fluid channels and threaded inserts set at calculated jet angles to keep each stream coherent from insert to wall.
On the job, that difference compounds:
- Fewer passes per section — the wall force that took three passes with a drilled nozzle takes one.
- Less water per foot — critical on tanker/recycler work and long rural setups.
- Less fuel and fewer pump hours for the same footage cleaned.
- Shorter time on site — the cost line that actually decides whether a contract is profitable.
The three tiers at a glance
| Tier | Construction | Typical efficiency | When it wears |
|---|---|---|---|
| Tier 3 | Machined fluid channels + threaded titanium-ceramic or steel inserts at calculated angles | 80–98% | Swap an $8–15 insert in seconds; ceramic inserts carry a 5-year warranty |
| Tier 2 | Replaceable steel inserts | Better than drilled; below the 80% Tier 3 threshold | Insert swap; steel inserts carry a 1-year warranty |
| Tier 1 | Factory-drilled orifices | Lower — as little as ~30% | Not repairable — replace the nozzle |
For the full cost math on Tier 1 vs Tier 3 over a year of drain work, see Cheap vs. Pro Jetter Nozzles — The Real Math.
KEG's Tier Three lineup
KEG Technologies marks qualifying nozzles with the Tier Three Fluid Mechanics seal in its catalog. These are the rated families:
| Nozzle | Rated efficiency | Designed for | Pipe range |
|---|---|---|---|
| Royal | 98% | All-around cleaning of large-diameter pipe; 12 jets at 22°/32° for high wall force | 12"–48" |
| Torpedo | 97% | Heavy steady cleaning; mass keeps it in the bottom of the pipe | 6"–16" (usable to 32") |
| Cleaning | 80%+ | The everyday workhorse — routine maintenance cleaning, 15°/25° alternating jets | 3"–16" by size (wide-angle version to 40") |
| Traction | 80%+ | Pulling hose up steep grades and long runs; optional forward jet turns it into a penetrator | 2"–12" by size |
| Sewer | 80%+ | 17–22 lb heavyweight for large sanitary and storm lines; 15°/20° wide pattern | 6"–24" |
| OMG | Tier 3 Fluid Mechanics | Deteriorated, corrugated or compromised pipe where wall pressure isn't wanted | 12" and up |
| Stallion | Tier 3 Fluid Mechanics | Flushing damaged or weakened pipe — corrugated metal, concrete, clay, plastic | 6" and up |
Note: Traction, Cleaning, Torpedo and Royal are also offered in aluminum versions — same Tier Three fluid mechanics at roughly half the weight (KEG requires a skid or centering device for warranty coverage on aluminum bodies).
Where to get Tier 3 nozzles
- Tier 3 ceramic nozzles in stock — 1/4" through 1-1/4", ships from Spartanburg, SC in 1–2 business days.
- Contractor & Municipal — 3/4" and larger — Victory Line Sewer, Cleaning and Traction nozzles are orderable online; card orders take 20% off list automatically at checkout.
- KEG demo & used — factory-checked Royal, Torpedo and OMG units at contractor prices when available.
Comparing nozzle brands?
Shopping KEG against the other premium names? We wrote honest, spec-sourced comparisons — including where the other brand wins: Warthog vs KEG · ENZ vs KEG.
For municipal buyers and bid specs
Municipal cleaning bids increasingly reference the NASSCO Jetter Code of Practice. If your spec calls for Tier Three fluid mechanics, we can support the submission: purchase orders accepted, printable spec sheets on every product page (look for the "Printable spec sheet" link), W-9 and origin documentation on request. KEG nozzles are German-manufactured and assembled to order in Spartanburg, South Carolina.
Start here: Municipal purchasing at Jetter Pro Supply, or contact sales directly — (864) 804-6637 · sales@jetterprosupply.com.
How to verify any "Tier 3" claim
- Ask for the rated efficiency percentage. Tier Three starts at 80%. If the seller can't state a number, it isn't rated.
- Look at the construction. Factory-drilled holes are Tier 1 by definition — no drilled-orifice nozzle qualifies.
- Check the warranty. Efficiency and life span travel together: KEG backs titanium-ceramic inserts for 5 years and every product with a 90-day money-back guarantee.
Common questions
Is "Tier 3" a KEG marketing term?
No — the tier classification comes from NASSCO's Jetter Code of Practice publication, an industry standard. KEG builds nozzles that meet or exceed the 80% threshold and marks them with its Tier Three Fluid Mechanics seal.
Does a Tier 3 nozzle require a bigger jetter?
The opposite — because less power is wasted, a Tier 3 nozzle gets more cleaning done with the machine you already own. KEG inserts are jetted to your machine's GPM and PSI so the nozzle matches your flow exactly.
Ceramic or steel inserts?
Both fit the same Tier 3 bodies. Titanium-ceramic inserts hold their orifice geometry far longer (5-year warranty vs 1-year for steel) and keep efficiency high as they age; steel costs less up front.
What does a worn insert cost to replace?
Typically $8–15 per insert, swapped in seconds with a hex key — the body stays in service for years. That replaceable-insert economy is a core part of why Tier 3 costs less per job despite the higher purchase price. Shop replacement inserts.