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Hi, Sure. I'm new to uploading here, but hope I've managed to attach the picture. If it's any help, I've ordered the replacement from these people: http://havelockcontrols.co.uk/itemdetl.php?itemprcd=53211052 which also shows the specification of the inlet/outlets. Jever

Three Port Valve V4073A1062

Hi, Thanks footprints, I've ordered the whole unit and hope to pick it up in a couple of days. Apparently the input/output ports to the unit are 1 inch BSP female connections. The faulty unit that is currently installed to my system has brass female ports that then appear to have brass...

Hmm, It sounds like I will have to order one of these: http://www.amazon.co.uk/Honeywell-V4073A1062-Motorised-Mid-Position-Diverter/dp/B00BJ74N9C rather than just replacing with one of these...

Hi, I'm having problems with my heating system and identified that the source is a faulty 3 port valve. It's a fairly old system (installed 1986) and the 3 port valve is a Honeywell V4073A1062. It seems that it's one of the older models and requires a system draindown if you want to separate...