LavaTap Drayton ZA5 2 Port Zone Valve Actuator Head 27650, 5 Wire, Snap On Replacement, Spring Return, Manual Lever, Central Heating System, S Plan Compatible, 230V

Head Only, Valve Body Not Included: Replacement Drayton ZA5 actuator head 27650 that clips onto your existing brass valve body; for a leaking or seized body, choose the complete ZA5 22mm valve 27100 Check the Head Is the Fault: A failed head usually stops humming when heating is called, leaves the valve stuck open or shut; if the programmer or thermostat has failed, replace that instead Fits Drayton 679 Valve Bodies: Direct replacement head for Drayton ZA5/679-2 2 port zone valves and British Gas BGMVSP-2; not for MA1 mid position valves, Honeywell or other brand bodies Snap-On, No Drain Down: Press the release button, lift the old head off the valve stem and clip the new one on; the water side is never opened, so the heating system stays full 5 Wire, 1m Cable: Green/yellow earth, blue neutral, brown live, grey and orange end switch that fires the boiler and pump once fully open; isolate mains and wire like for like Spring Return with Manual Lever: Powered open and spring closed if power is lost; the manual lever holds the valve open for filling, venting or draining; 230V, rated to 93°C and 8.6 bar static