We have such a siphon tube bought at london boat show. Cost £10. Works well - eg. transfer of diesel from can to main tank. Don't know supplier. Can't quite understand Chunky's maths in his last sentence.
You could use a normal tube, seal the can with an old rag and compress it until the fuel rises in the tube. Not that difficult really unless the can's almost empty. Let cohesive attraction do the job for you and buy yourself a drink.
We find the dinghy inflator foot pump is excellent for blowing back out any stuff in the inlet pipe. This happens a lot, inland - all those twigs and leaves. One end into the inlet into the filter bowl. Then operate the pump a few times. Excellent results.
Cracking idea!!
Maybe the same sort of thing ...with a bit adaptation would work on the heads!
Mark you...
I've often thought that some sort of rodding eye should be incorporated into the heads pipework
I have cut our lavatory inlet pipe and inserted a standard male-female hose brass connector. Once in a while I disconnect the two and connect the hose pipe fed from the dockside mains. Blasts the pipes through in either directions. Have to be careful about overflow from the lavatory bowl, but again, works a treat. /forums/images/graemlins/smile.gif
I should add, we have a Lavac. May/may not work with other bogs.
Not to mention being careful about seepage into the mains from your shipboard foul water system. You're managing to be both disgusting and selfish in one act. And before you say, that's what happens in houses, it's not. There's a cistern in between.
Not much worse than the treatment marina/dock hoses normally get, dropped in the water, lying in hot sun (!) for hours, etc. I see that UK operators are beginning to be more wary of these potential sources of contamination and removing the fixed hoses. Soon UK yachtsmen will all need to carry their own hoses, as continental owners have done for years. Then they will only have themselves to blame when the crew goes down with 'Gippy tummy'.
I carry a hose and have done for years. Like you I have sailed in France and Holland a lot. In English marinas the hoses are in and out of the seawater like yoyos. The marina might tell visitors not to use sea toilets, but that's a long way from from me being certain no one is. Dear old Grehan (I shouldn't have been so blunt, sorry Grehan) hasn't considered the possibility he's passing foul water either from his own inlet or from the sea onto his crew next time he fills his fresh water tank.
also , have a look at how close the inlet and outlet on boat lavatories are to each other. Some of them pump and suck the same stuff, just diluted.
Funny, carry my own hose but haven't been able to sorce a tap adapter anywhere. Almost nicked one at the BP service station. Back to jerry cans, pressure washing the deck isn't much use anyway now.
Hull Marina btw so where did you get them. Don't tell me you brought them over from France!
The tap adapter that fits the taps in Hull Marina is a bog standard Gardena one. You can get them from any old garden shop, then plug in a hose fitting.