This Solar High Temperature Automatic Air Vent has a high temperature venting chamber with opening float valve for the automatic venting of air from solar thermal systems. With ⅜" connections, and a high temperature isolating valve also available as an option. It is good practice to use with an isolating valve so that theairvent can be removed for maintenance without draining the system.
Care should taken in considering just where the vent should be located. Obviously at the highest point in the system, but accessibility should also be considered.
Note, this improved version exceeds our previous high temperature max of 160°C, but 180°C on this new valve can only be achieved in short temperature peaks. This is not an alternative valve that can exceed this, so again, care must be taken in positioning!