Whale Automatic Shower Pump Tray Kit BP1558B comes with a transformer and flow switch, which will start pumping away the waste shower water automatically when the shower is turned on. Also supplied is a 50mm diameter waste outlet trap suitable for use with a shower tray. The waste outlet has a 22mm outlet pipe and comes with a 15mm reducer. It is suggested that for electric showers 15mm pipe is used to connect the waste outlet to the pump inlet. For mixer showers use 22mm pipe from the waste to the pump inlet.
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