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This part (MPN: 998941) is designed for models within the Ariston range
This part (MPN: 87181070870) is designed for models within the Worcester range
but the pump is I noticed that just after each pump cycle when the boiler was reset
1) is designed for models within the Vaillant range
Worcester 3 Way Diverter Valve 87170100620 3-3 R1 2005-2008 This part (MPN: 998941) isWorcester 3 Way Diverter Valve 87170100620 Product Overview The Worcester 3 Way Diverter Valve 87170100620 is a critical component designed for specific Worcester heating systems. This Diverter Valve mechanically directs hot water to either the radiators (heating) or the taps (hot water), ensuring demand priority. properly functioning components are vital for the energy efficiency and safety of your boiler. Product Condition Options: This part may be
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