Rainwater harvesting systems. Water Butt / Rain Barrel Tap Kit – 3/4" BSP Connector for 26mm Hole. 3/4" BSP male threaded adaptor – fits a 26mm drilled hole. The kit includes a3/4" BSP male threaded connector, supplied with alocking nut and sealing washers to ensure a secure, watertight fit through the tank wall.
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