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Wallace & Tiernan

Premier provider of gas chlorination, disinfection & chemical dosing systems for over a century

Wallace & Tiernan

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Featured Solutions

Gas Feed Systems

All-vacuum operated gas feed equipment & solutions for simple & reliable disinfection dosing, control & safety management
Chlorine gas has been the predominant chemical for the disinfection of water since our founders Charles F. Wallace and Martin F. Tiernan installed the first chlorinator in New York over 100 years ago. Using a remote vacuum-operated gas feeder, a chlorine solution is prepared on-site by dosing the chlorine gas into the process water. Featured Products: V10K Vacuum System, Emergency Shutoff Drive, V-2000 Chlorinator
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On-Site Hypochlorite Generation Systems (OSEC)

OSEC systems produce a low strength disinfectant on demand by electrolysis of a brine solution
OSEC systems safely generate sodium hypochlorite on-demand, using only salt, water and power. With over 30 years of history installing systems throughout the world, our branded OSEC systems are suited to many applications across municipal, aquatics and industrial markets. Featured Products: OSEC L, OSEC B-Pak, OSEC B-Plus
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Disinfection Process Analyzers & Controllers

Total systems solution for complete analysis & control of water quality
With ever-increasing demands for improved water quality, customers are using both non-chemical and chemical based solutions to achieve their water quality goals. A chemistry-controlled environment is a safe environment, and our array of analyzers and controllers provide 24/7 monitoring of water quality parameters, allowing you to focus on the things that matter most to your facility. Featured Products: Rivo I System Analyzer, Rivo I Control System
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About Wallace & Tiernan

The Wallace & Tiernan legacy in chlorination began 100 years ago with one of the most significant public health advancements of the millennium - the 1913 installation of the first chlorinator in a public drinking water system. It continues today with the latest in gas chlorination, disinfection and chemical dosing systems and packages.  Our gas feed and residual monitoring technologies continue to set the benchmark for safe and reliable drinking water purification.