This is a complete valve and actuator set for your heating system. The 22mm compression coupling 2-port shoe valve features spring return to closed operation. The Danfoss HP22 is a motorized zone valve used in hydronic heating applications. It has a 22mm connection size and controls water flow for efficient heating. The valve is electrically operated, opening or closing remotely via thermostat signals. It has two ports for water inlet and outlet, and is compatible with radiators and underfloor heating. Built for durability in heating systems, it enhances comfort and energy efficiency with precise area heating control.