The ESi 2 Port Actuator Head is a direct replacement for the market leader, at a much more affordable price. It comes with two screws, so it can be fitted directly onto other popular manufacturers bodies, making it a super-simple replacement. The actuator also features a manual lever for quick draining and filling the system, saving money and time while carrying out system maintenance. It fits both 22mm and 28mm 2 port zone valves, and with minimum noise levels and small power usage, it is the perfect option to save on energy costs. Suitable for use in light and domestic heating applications.