How does a Tri-Shield pre-wet system help in cold temperatures?

Yes, salt needs moisture to dissolve and kickstart the melting process, which is why dry rock salt struggles in bone-dry, freezing conditions. Pre-wetting salt with liquid brine or additives right at the spreader instantly jump-starts a chemical reaction to lower the freezing point and prevents the material from bouncing or blowing off the pavement. This increases melting speed, reduces salt scatter, and maintains effectiveness even as temperatures plummet.

How do I determine which liquid capacity I need (50, 200, or 300 gallons)?

Selecting the right capacity depends on your primary application method: Pre-Wet salt typically requires about 10 gallons of brine per ton. A 50-gallon system is ideal as it supports roughly three full loads for a 1.5 cu yd spreader (enough to cover 25 acres before refilling). Direct Liquid Application generally uses around 30 gallons per acre. A 200-gallon system is usually best and can be upgraded to 300 gallons with expansion tanks (enough capacity to treat approximately 10 acres per tank).

How do I adjust the application rate on my Tri-Shield pre-wet or direct liquid kit?

Application rates are manually adjusted directly on the pump. To fine-tune your flow, gently twist the adjustment valve in small increments until you reach your desired output. For instructions and safety procedures, please refer to the calibration section of your owner’s manuals (50-gallon and 200-gallon +expansion kit).

Is the feed gate compatible with a MARAUDER™ hopper spreader equipped with a Tri-Shield pre-wet and direct liquid application system?

Yes, the feed gate accessory is compatible with the Tri-Shield system. The pre-wet system sprays material as it enters the chute, downstream of the feed gate. A chain-drive MARAUDER™ hopper spreader. It will restrict material flow to the spinner, lowering the maximum material feed rate. It is not compatible with auger models, as the design naturally limits flow through the spacing between the auger flights.

Tri-Shield
PRE-WET & DIRECT LIQUID APPLICATION

Capacity: 50, 200 & 300 Gallon Configurations
Compatibility: MARAUDER™ 0.7 - 5.0 cu yd Spreaders

SHIELD THE STORM

More jobs can be done even faster with the Tri-Shield System that allows you to spread, pre-wet, and spray with one tool. Your MARAUDER™ stainless steel hopper will become even more valuable with the addition of direct liquid application. Enhance your full fleet with prewetting and direct liquids capabilities to use less salt and deliver better service.

Unique Features

What Sets Tri-Shield Apart

Pre-Wet & Anti-Icing Capabilities

The liquid kits come with a spray bar that can apply brine directly onto the spreading material as it’s being delivered to the spinner for pre-wetting and also includes spray nozzles that can be used for spraying brine directly onto the driving surface for anti-icing applications.

12 Volt Motor & Pump

The 12-volt motor and pump combination provides a 7 gallon per minute pump capacity to ensure sufficient liquid delivery is suitable for either pre-wetting granular material or spraying a direct application. This simple setup results in low maintenance and reliable performance.

Integrated Control

Integrated Control

Reduce cab clutter and training ease by using the On/Off accessory control integrated seamlessly into the MARAUDER spreader control.

Manual Control Valve

50 Gallon Configuration

200 Gallon Configuration

300 Gallon Configuration

expansion tank for liquid kit 300 configuration

300 Gallon Configuration

Expand to 300 gallons of brine capacity (200 gallon system that includes four 50 gallon tanks, plus an additional 100 gallon expansion) for the 3.0, 4.0 or 5.0 cu yd MARAUDER hopper spreaders for pre-wet and anti-icing capabilities. Sized to support larger flatbed vehicle applications and handle the largest jobs with the greatest efficiency.

Specifications

Selecting a model updates product features and specs below.

Metric

Specification	85695	93265-1	93270	93275
Capacity	50 Gallons	50 Gallons	200 Gallons	100 Gallons Expansion
Spreader Compatibility	MARAUDER S070A / S070C	MARAUDER S150A / S150C S220A / S220C P150A / P150C P220A / P220C MARAUDER S150A / S150C S220A / S220C P150A / P150C P220A / P220C	MARAUDER S300A / S300C S400A / S400C S500A / S500C	MARAUDER S300A / S300C S400A / S400C S500A / S500C
Overall Dimensions (LxWxH)	64" x 60" x 26"	64" x 60" x 26"	64" x 72" x 36"	26" x 72" x 28"
Tank Dimensions (LxWxH)	26" x 60" x 23"	26" x 60" x 23"	58" x 72" x 23"	26" x 72" x 28"

Specification	85695	93265-1	93270	93275
Tanks	Two 25 Gallon Tanks	Two 25 Gallon Tanks	Four 50 Gallon Tanks	Two 50 Gallon Tanks
Motor/Pump	12v Motor 7 Gallon Per Minute (Pump Capacity) 2.5 Gallon Per Minute (System Output) 12v Motor	12v Motor 7 Gallon Per Minute (Pump Capacity) 5 Gallon Per Minute (System Output) 12v Motor	12v Motor 7 Gallon Per Minute (Pump Capacity) 5 Gallon Per Minute (System Output) 12v Motor	—
Wiring Harness	Loomed, Molded Plugs	Loomed, Molded Plugs	Loomed, Molded Plugs	—
Control	Integrated, In-Cab On/Off	Integrated, In-Cab On/Off	Integrated, In-Cab On/Off	—
Mounting	Nested With Hopper	Nested With Hopper	Nested With Hopper	Nested With Hopper

Product Support & Resources

Buying Resources

Spec Sheet

Printable specification sheet for Tri-Shield

Download

Services & Support

Quick Search

Find service documentation for your Tri-Shield model. Search by part number, literature number, or keyword.

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Frequently asked questions

Yes, salt needs moisture to dissolve and kickstart the melting process, which is why dry rock salt struggles in bone-dry, freezing conditions. Pre-wetting salt with liquid brine or additives right at the spreader instantly jump-starts a chemical reaction to lower the freezing point and prevents the material from bouncing or blowing off the pavement. This increases melting speed, reduces salt scatter, and maintains effectiveness even as temperatures plummet.
Selecting the right capacity depends on your primary application method:
- Pre-Wet salt typically requires about 10 gallons of brine per ton. A 50-gallon system is ideal as it supports roughly three full loads for a 1.5 cu yd spreader (enough to cover 25 acres before refilling).
- Direct Liquid Application generally uses around 30 gallons per acre. A 200-gallon system is usually best and can be upgraded to 300 gallons with expansion tanks (enough capacity to treat approximately 10 acres per tank).
Yes, the feed gate accessory is compatible with the Tri-Shield system. The pre-wet system sprays material as it enters the chute, downstream of the feed gate. A chain-drive MARAUDER™ hopper spreader. It will restrict material flow to the spinner, lowering the maximum material feed rate. It is not compatible with auger models, as the design naturally limits flow through the spacing between the auger flights.