The Drayton motorised zone valve features a Snap-On actuator that is easily removed from the body by depressing the release button on the side. This arrangement makes it simple to change the actuator or the motor. Models feature new "snap-on" actuators and have industry-standard wiring and dimensions. Warranty: 18 Months. The new Drayton 2 port, diverter and mid-position valves are available in 22mm and 28mm. All models feature new "snap-on" actuators and have industry-standard wiring and dimensions. Allows a single flow of water to the heating or hot water (open or closed). Simple industry-standard wiring. Snap on/replaceable actuator. 230V actuator with 1m 5-core cable and 3(1)A switch rating. Complete with compression fittings for 22mm copper pipe. Standard 2-port valve: energise to open. Manual lever and valve position indicator. Spring return with 100% tight shut off. Opens in 14 seconds. Replaceable actuators and motors.