Manufacturing thermal actuators and thermostatic valves for over 70 years
Rostra Vernatherm is a major manufacturer of thermostatic, self-actuating valves, and pressure controls.
We specialize in thermal actuators, pressure relief valves, oil valves, thermostatic valves, solar protection products, and custom controls.
We are ISO 9001:2008 certified.
Oil ValvesMore
Thermally activated valves for fluid control in various applications, this product installs in a valve housing that provides a valve seat. Select any activation temperature range from 30F - 300F
Thermal ActuatorsMore
Thermally activated, hydrocarbon powered control devices used in various control applications.
This device delivers linear motion at any set temperature range from 30F - 300F.
Pressure Relief Valves More
Adjustable & Non-adjustable styles with relief pressures between 8 psi to 3,500 psi.
Various materials available for various applications
Self Contained ValvesMore
Valves with housings, ready for plumbing hookup. These valves can contain thermal actuators, and pressure relief controls all within one self contained valve.
Why Solar Freeze Protection? Keep your solar collectors and exposed piping from freezing with the Vernatherm solar freeze protection valve.
The Vernatherm valve contains a thermal actuator that opens the valve when the temperature approaches freezing and re-closes it upon warm up. This is a continuous process of modulation; cold water is discharged and replaced by warmer water preventing panel and piping freeze up.
This valve features a patented anti-seize feature which ensures longevity and durability you can depend on, through the years this valve will not seize due to corrosion, and will continue to function.
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Disclaimer: Do not expose valves to temperatures above 300F (148.8c) as this may damage the valve.