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We’ve recently bought a Hilka multi-purpose siphon kit from Screwfix, mainly to transfer dirty bath water to a water butt in the garden to water plants with. For £10 it’s great. Might be worth a look for what you need?
andyp-
Is there anything wrong with this logic?:
Fill hose from tap, plug either end, insert ends in 'to be drained' and target area, unplug ends?
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Cheers, I had a look, but I already have a 3/4" hose ( bigger better for siphon I believe) and that one uses a smaller hose. Thinking of having a punt on the lomo bilge pump to prime the hose then detach while submerged might work.
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BTW RHS recommend using grey water within 24hrs, do you have any concerns about bacteria breeding in the butt? I was looking in to this too recently and might be tempted to fit a diverter valve on the bath waste eventually (once I've grown something to water) so it would go directly on to the plants via some sort of irrigation pipe.
ColinTheBald
Polygon
I've been trying to get a siphon working in a 30m 3/4 hose. Drop is about 1m with the first 10m being pretty much flat, so I need to move quite a large quantity of water to get it started . I did get it working once with a jiggle/ball siphon valve but it's a lot of work and I haven't been able to make it work since.
Considering making my own from some kind of plunger with 2 check valves. Does something exist off the shelf that will have a high throughput and for 3/4" hose, or does anyone have any tips on what construction would look like?