Danfoss 037N0064 is a 2-way motorized valve from the Danfoss family of motorized zone valves. It is specifically designed for use in a heating or cooling system, and functions as a way to regulate the flow of water or steam through a zone. This particular model features an on/off switch and an adjustable timer, allowing for easy, accurate control of system variables. It also has a built-in protection feature that prevents water hammer and cavitation, which can cause damage to the valve or system. Danfoss 037N0064 is made with a cast iron body, a brass bonnet, and a stainless steel stem with a PTFE seat.