815-315-3851|P.O. Box 318, Towanda, IL 61776
Water treatment plant facility

Precision Control Systems

Water or Waste Water. Municipal or Industrial. From 250,000 to 1B gallons per day.

Whatever your application, StelTec ORP/pH Control Systems can provide precision water chemistry control to help keep you in compliance, while using less chemical.

Industrial control electronics

Proprietary Technology

Control.

Our proprietary NTL Control Logic reacts without over-reacting. It's the brains behind our controllers — delivering precise chemistry adjustments without the oscillation that wastes chemical and stresses equipment.

Poly Infuser

The STELTEC Poly Infuser is a complete polymer mixing and injection system engineered for precise, reliable chemical feed in water and wastewater treatment applications.

Designed for ease of installation and low maintenance, the Poly Infuser delivers consistent polymer activation and dosing — improving flocculation performance and reducing chemical waste across a wide range of flow conditions.

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STELTEC Poly Infuser polymer mixing system

Product Lines

Water & Waste Water Control Systems

Expertise and experience combined to build cutting-edge products for the most demanding treatment applications.

STELTEC HL Series Controllers

HL Series Controllers

Precision ORP/pH control for demanding municipal and industrial applications. Powered by proprietary NTL Control Logic.

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IC-1 Controller

Single-channel ORP/pH control with NTL Control Logic.

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HL-Ts Monitor

Temperature-compensated monitoring for accurate readings.

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HL-PO43 Monitor

Phosphate monitoring for effluent compliance.

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Sensors & Accessories

Submersible sensors, wash systems, and consumables.

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Technical Documentation

Spec Sheets & System Drawings

Download PDF spec sheets, standard-system drawings, and sales brochures for every product line. Organized by product for fast access.

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After the Sale

Support.

We are experts in our industry and stand behind our products. Startups, troubleshooting, repairs, accessories, consumables — we do it all. Our team is available by phone for specification requests and technical questions.

STELTEC support technician

Ready to Specify?

Contact us with your application details. For complex specifications, call us directly — our engineers are ready to help you select the right system.