Discuss 28mm 3 Port Valve, But Not Mid Position. in the Plumbing Jobs | The Job-board area at PlumbersForums.net
Best using a proper mixing valve, like esbe.
[DLMURL]http://www.esbe.eu/de/en/~/media/ESBE%20PIM_ESBE%20sync%20BR/Documents/Data%20sheets/GB/Guide%20Rotary_GB_99501362_A_LR.ashx[/DLMURL]
Just use a 28mm 3 port and twist white and grey together.
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