Solar Hot Water
Freeze Protection Valves

Protect your solar hot water system from freezing by using a Rostra Vernatherm solar freeze protection valve.

Vernatherm Freeze Protection Valves are designed to be installed onto your existing solar hot water system providing you with an afordable non-electric thermally controlled freeze protection system. These valves contain precise thermal actuators that open the valves when the temperature approaches freezing and closes them upon warm up. This continuous process of modulation; cold water being discharged and replaced by warmer water prevents panels and piping from freezing.

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New Design Modifications:
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