Keeping head's discharge hoses clear

By coincidence I just fitted a new vent to the inlet hose. The pan had not been filling with water post flush, and various services later, at a cost, I still hadn’t solved it. I bought the two vent orifices, white and black. Removed the old vent, fitted the white and a very full pan of water, post flush. Changed out to black, and the pan level about half full. All back to working satisfactorily. The orifice size difference is tiny, I can’t really tell the difference by eye. I actually blocked off the old hole in the hose and drilled a new 4.5mm hole so the vent orifice fitting was a tight fit to avoid extra air flow.
 
Fresh water flusg will noy give you this problem only with sea water flush
I worked out a 'Half and Half' solution.

The hand washing water after using the loo, also after morning ablutions, is collected in a small bowl, not emptied down the heads sink.

This is poured into the head-an American Raritan-and pumped through.

It works far better now using waste fresh water.

2 Litres of white vinigar are put in the bowl, pumped until almost empty and the outlet seacock closed when we leave the boat for a while.

This sits there, quietly fizzing gently until we return. Keeps the joker and pipes clean and free of build up.

Works for us!
 
However, to drift back again a bit . . .
But how do you fill the outlet pipe if the outlet seacock is open?

I was thinking having a surplus of flushing solution in the bowl, pump, and once the pipe is thought 'full' through to the the seacock shut the seacock while still pumping, though stopping pumping immediately it is actually closed. (It may well require two people - one each for the pump and the seacock, depending on layout etc. - to achieve this)

The pipe won't be full after this, but there will be be some on the surface all the way through, and some sitting in the lower part of the run down to the seacock, which is where waste water (likely with some degree of contamination) will sit for long periods.

I think to have it full of descaler solution the only way would be to disconnected the outlet pipe from the pump, suspend the 'pump' end of it so there's a continuous run upwards from the seacock, and fill it using a jug, funnel or whatever. Leave to stand for however long, drain by opening seacock, reconnect to pump.

As I said earlier, I never had to do it in well over 10 years use.


Fresh water flusg will noy give you this problem only with sea water flush

Unless you are in hard water area, perhaps?
 
I will touch wood when I say this but number ones , number twos and toilet paper all go down and through my toilet, I spend up to a week away, at a time, several trips a year, on my boat so the toilet is used a lot and I have never had a blockage problem because I pump 20 times. All is bio degradable and compared to a flock of geese it adds nothing to the water quality. No, I do not pump out in mariners, as I do not use them very much but only in tidal water and I know the shrimps must appreciate me.
 
However, to drift back again a bit . . .


I was thinking having a surplus of flushing solution in the bowl, pump, and once the pipe is thought 'full' through to the the seacock shut the seacock while still pumping, though stopping pumping immediately it is actually closed. (It may well require two people - one each for the pump and the seacock, depending on layout etc. - to achieve this)

The pipe won't be full after this, but there will be be some on the surface all the way through, and some sitting in the lower part of the run down to the seacock, which is where waste water (likely with some degree of contamination) will sit for long periods.

I think to have it full of descaler solution the only way would be to disconnected the outlet pipe from the pump, suspend the 'pump' end of it so there's a continuous run upwards from the seacock, and fill it using a jug, funnel or whatever. Leave to stand for however long, drain by opening seacock, reconnect to pump.

As I said earlier, I never had to do it in well over 10 years use.




Unless you are in hard water area, perhaps?
How can you be in a hard water area if you are pumping sea water. Hard water only comes from taps due to the local underground strata that its filters through..............unless of course I am wrong so please educate me.
 
How can you be in a hard water area if you are pumping sea water. Hard water only comes from taps due to the local underground strata that its filters through..............unless of course I am wrong so please educate me.

Hard water ... water that has a larger amount of dissolved salts / minerals etc in the water .... usually as you say from it passing through rock strata etc.

Salt Water will have much higher levels of dissolved 'salts / minerals' ... so maybe its not so wrong to talk about hard water ?
 
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