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Premium Holding Tanks

Trionic Corp Super Premium Wastewater Holding Tank Systems offer outstanding performance and value. These wastewater holding tanks are odor-free and leakproof. The tanks offer 3/8" thick walls molded from virgin LLD polyethylene, making them incredibly durable and impact resistant. Top-mounted hose connections eliminate sewage standing in discharge hoses, which is the major cause of odor permeation through the hoses. Raised vacuum relief valves with an easy clean screw cap prevent the tank from collapsing during dock pump-outs with high levels of vacuum and clogged tank valves.

All Super Premium Wastwater Holding Tanks include the following fittings:

  • 1/2" NPT x 5/8" Vent Assembly
  • Inspection Port
  • 1-1/2" Inlet
  • 1-1/2" Outlet for Pump-Out
  • Vacuum Relief Valve
  • Inlet, Outlet, and Vent Fittings Can be Rotated
  • Optional Overboard Discharge Fitting is Also Available (add $30)

All of these holding tank systems comply with the United States Coast Guard (USCG) requirements.

The Trionic Corp Super Premium Wastewater Holding Tanks were selected by Practical Sailor Magazine as the best available waste holding tank for boaters. Click here to read the write-up. These holding tank systems are the right choice for you, so buy with confidence.


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Super Premium Holding Tank - 14 gallon
Odor free, leakproof design made of 100% 3/8" wall virgin polyethylene. Top mounted hose connections eliminate sewage standing in discharge hose which is the major cause of odor pe...

$339.00

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Super Premium Holding Tank - 20 gallon
Odor free, leakproof design made of 100% 3/8" wall virgin polyethylene.Top mounted hose connections eliminate sewage standing in discharge hose which is the major cause of odor per...

$384.00

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Super Premium Holding Tank - 31 gallon
Odor free, leakproof design made of  100% 3/8" wall virgin polyethylene. Top mounted hose connections eliminate sewage standing in discharge hose which is the major cause of o...

$441.00

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Super Premium Holding Tank - 39 gallon
Odor free, leakproof design made of 100% 3/8" wall virgin polyethylene.Top mounted hose connections eliminate sewage standing in discharge hose which is the major cause of odor per...

$497.00

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Super Premium Holding Tank - 40 gallon-5
Odor free, leakproof design made of 100% 3/8" wall virgin polyethylene. Top mounted hose connections eliminate sewage standing in discharge hose which is the major cause of odor pe...

$497.00

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Super Premium Holding Tank - 45 gallon
Odor free, leakproof design made of 100% 3/8" wall virgin polyethylene. Top mounted hose connections eliminate sewage standing in discharge hose which is the major cause of odor pe...

$520.00

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Super Premium Holding Tank - 55 gallon
Odor free, leakproof design made of 100% 3/8" wall virgin polyethylene. Top mounted hose connections eliminate sewage standing in discharge hose which is the major cause of odor pe...

$556.00

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Trionic Corp Products

Trionic Corp manufactures a wide range of marine and RV products. For marinas and docks, dock boxes, dock carts, dock boarding steps, trash cans, buoys, channel markers, and barriers floats are offered. Trionic also offers spill kits, spill containment boom, sorbents, and solar lighting. or boats and RVs, Trionic Corp has over 70 different sized water tanks and holding tanks, shower sump tanks, premium holding tanks, tank hose fittings, tank level monitors, vent filters, and tank pump out tubes. Trionic Corp's quality and service set us apart from the competition. Our products are built for Marina Life!

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Mailing Address:
P.O. Box 324
Port Washington,
WI 53074
Physical Address:
222 E. Main St. Suite 208
Port Washington,
WI 53074

sales@trioniccorp.com

(262) 268-9240