Barberi® thermostatic mixing valves Woody, devices with side mixed water, are used to adjust the fluid temperature. Their standard application is in heating systems with solid fuel generators (logs, pellet, wood chips). Their function is to maintain the fluid temperature returning to the generator over a fixed value. This function allows to reduce the condensation of water vapour, contained within the flue gases, which causes dirt on the thermal exchange surfaces and chimney. The valve keeps a high generator efficiency, preventing encrustations and dust from un-burnt material which reduce the thermal exchange from the combustion flue gases to the system water, damage draught and can be subject to fire. Valves of this range can be supplied with fittings and nuts and, if they need to be connected directly to a pump, versions with running nuts are available.