I guess that if you were linking water butts together you could try replacing any (leaky) taps with tank connectors and treat the task as a plumbing job and use pvc plumbing pipe, connectors and taps instead.
At one end of any pipe you could fit a hose type tap fitting with a jubilee clip, or a proper tap, to connect a hosepipe to.
Screwfix - Straight Tank Connector 21.5mm Pack of 5 £3.29
At one end of any pipe you could fit a hose type tap fitting with a jubilee clip, or a proper tap, to connect a hosepipe to.
Screwfix - Straight Tank Connector 21.5mm Pack of 5 £3.29
