Vernatherm Freeze Protection Valves are designed to be installed on your 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 panel and piping freeze up.
Our valves have a patented feature which prevents the seizing of the thermal actuator which is a common problem among other freeze protection valves offered by our competition.
Valve Features 
♦ Discharge temperature set to 45F (7.22C) or 35F (1.67C)
♦ Able to withstand temperatures up to 300FC (137.77)
♦ Internal filter screen
♦ UV stabilized body material
♦ FDA and NSF listed materials
♦ 1034kpa (10.34 bar 150psi ) maximum operating pressure
♦ Complete mechanical operation
♦ Small size for easy install
♦ Tamper resistant design
♦ Corrosion resistant materials
♦ Non-electric function
♦ Anti-insect discharge port
♦ Anti-seize feature ensuring longevity and durability
Valve Types
♦Straight Configuration
Thermal Discharge @ 35F
Thermal Discharge @ 45F
♦Angled Configuration
Thermal Discharge @ 35F
Thermal Discharge @ 45F
Important: Do not expose valves to temperatures above 300F (148.8c) as this may damage the valve.
Frequently Asked Questions
When will your solar water heating systems freeze?
Solar water heating systems, which use liquids as heat-transfer fluids, need protection from freezing in climates where temperatures fall below 42ºF (6ºC).
Will insulation alone protect me?
Do not rely on a collector's and the piping's (collector loop's) insulation to keep them from freezing. The main purpose of the insulation is to reduce heat loss and increase performance.
Is my system vulnerable to freeze damage?
Solar water heating systems that use only water as a heat-transfer fluid are the most vulnerable to freeze damage. "Draindown" or "drainback" systems typically use a controller to drain the collector loop automatically. Sensors on the collector and storage tank tell the controller when to shut off the circulation pump, to drain the collector loop, and when to start the pump again.
In integral collector storage or "batch" systems, the collector is also the storage tank. Placing large amounts of insulation around the unglazed parts of the collector and covering the glazing at night or on cloudy days will help to protect the collector from cold temperatures. However, water in the collector can freeze over extended periods of very cold weather. The collector supply and return pipes are also susceptible to freezing, especially if they run through an unheated space or outside. This can happen even when the pipes are well insulated. It is best to drain the entire system before freezing temperatures occur to avoid any possible freeze damage.
If you have a Vernatherm Freeze Protection Valve installed draining is not necessary.
I have a sensors, is that enough?
Improper placement or the use of low-quality sensors can lead to their failure to detect freezing conditions. The controller may not drain the system, and expensive freeze damage may occur. Make sure that the sensor(s) have been installed according to the manufacturer's recommendations, and check the controller at least once a year to be sure that it is operating correctly. If your power goes out your electrically controlled sensors will not operate.
Vernatherm Freeze Protection Valves do not rely on electricity to function, and are self powered; protecting you 100% of the time
What can I do to ensure freezing will never occur?
Integrate a Vernatherm Solar Hot Water Freeze Protection valve
This is a very cost effective way of ensuring you will not suffer from expensive repair costs due to freezing |
