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What is Master-Trol®?

Acorn Engineering Company’s original Master-Trol system has provided a means of control and water savings for over 20 years. Now Acorn is introducing the Master-Trol Plus, a modern-day improvement on our original Master-Trol® system.

What’s New With Master-Trol® Plus?

Master-Trol® Plus is most commonly used in correctional applications to monitor and maintain control over water usage and to save water. Master-Trol® Plus also prevents inmates from flooding correctional facilities and hiding contraband. It can potentially reduce water usage by 68% or more.


New Construction

Learn more about how to use Master-Trol® with your new construction projects.

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Master-Trol® Plus can also be retrofitted into your existing plumbing system.

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Easy to Order Packages

STEP 1: Determine your fixture
STEP 2: Select valve package
STEP 3: Order using package

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Side-by-Side Comparison of Master-Trol® Plus Features vs. original Master-Trol®




Set and Adjust Valve Timingcheck-markblue-check
Apply and Adjust Valve Lockoutsblue-checkblue-check
Enable/Disable Valves blue-check
Remote operation reduces maintenance interaction with inmatesblue-checkblue-check
Standalone or Communicating Configuration Optionsblue-checkblue-check
Rock solid pneumatic buttonblue-checkblue-check
Electronic operation optionalblue-checkblue-check
Repair parts readily available nationwideblue-checkblue-check
New Modular Design for Easier Sizing blue-check
IP54 Rated Enclosures blue-check
Interface Box Maintenance Control blue-check
Power Fail Bypass Mode blue-check
Optional Graphical Floor Plan View blue-check
Graphical Fixture/Status Icons blue-check


Flyer (pdf)
Submittal (pdf)
Flyer (pdf)
Flyer (pdf)