I need to get hold of a repalcement actuator valve for my heat pump -water has leaked from the valve and got into the actuator and shorted the connection in the mains plug at the base of the actuator and melted part of the plug. Now the original is a Honeywell VC4012-34, but I can only find similar but not identical ones listed on ebay- for example I've found a VC4012 without the -34 on the end and a VC4013. They all look the same, so can anyone tell me the significance of the numbers? Parts listed as Baxi or Potterton actuators seem to be the same thing, but none come with a mains lead and I can't find one listed separately (its a six pin molex with only 3 wires used). I've also found one with a mains lead built in (ie not detachable connector, called a VC4013-02 . Any idea if that would fit?