pressurised water tank

[solent clown]

I have built in the past pressurised water systems for expedition trailers using plastic jerricans, a car type schrader valve assembly, and a skin fitting from a water butt which we found a reducer for at a plumbing supplies shop. primitive but it allowed the tank to be placed over the axle and low.
The idea came from old volkswagens that used to use a similar system for their screen wash, the pressure being provided from the spare tyre.
I was thinking about the potential for doing the same in the boat rebuild, partly for fun as I have everything laying about to do it, and partly as it would be one more thing that was not absolutely dependant upon electricity (or a foot lever that would break eventually) - And it would be essentially "free" I have both elecric air pump, and a high pressure stirrup pump.
I suppose in theory if you wanted to keep the water good without chemicals for a long time you could flood it with co2 instead of air the same as I do when home brewing.
Probably simpler to fit an electric pump eh?

 

[NormanS]

It would work once the tank had a fair volume of air in it - ie half empty, but I don't see it as a great idea if you want a full tank. If I want to transfer either water of fuel to their twin tanks, I use a dinghy pump for that, which is a slightly similar situation.

 

[No Regrets]

Congratulations, you have thought of something abandoned long ago due to futility.... :nonchalance:

Given the difference between the composedness of air and water, you chose the lest efficient version, but I'm sure you know better than the rest of the world.

I look forward to your impending knighthood, as long as you have paid your taxes :encouragement:

 

[VicS]

I have built in the past pressurised water systems for expedition trailers using plastic jerricans, a car type schrader valve assembly, and a skin fitting from a water butt which we found a reducer for at a plumbing supplies shop. primitive but it allowed the tank to be placed over the axle and low.
The idea came from old volkswagens that used to use a similar system for their screen wash, the pressure being provided from the spare tyre.
I was thinking about the potential for doing the same in the boat rebuild, partly for fun as I have everything laying about to do it, and partly as it would be one more thing that was not absolutely dependant upon electricity (or a foot lever that would break eventually) - And it would be essentially "free" I have both elecric air pump, and a high pressure stirrup pump.
I suppose in theory if you wanted to keep the water good without chemicals for a long time you could flood it with co2 instead of air the same as I do when home brewing.
Probably simpler to fit an electric pump eh?

I don't think you would want the " sparkling" water that would lead to but you could separate water and air/gas with a diaphragm by using an accumulator tank.

Perhaps you could design a storage system that uses the water main pressure to pressurise the tank.

 

[solent clown]

Congratulations, you have thought of something abandoned long ago due to futility.... :nonchalance:

Given the difference between the composedness of air and water, you chose the lest efficient version, but I'm sure you know better than the rest of the world.

I look forward to your impending knighthood, as long as you have paid your taxes :encouragement:

I take it from that post that you do not approve.
By the way, what is "composedness" I am not sure of your meaning?

 

[VicS]

I take it from that post that you do not approve.
By the way, what is "composedness" I am not sure of your meaning?

Don't you have a dictionary?

From the OED:

composedness, n.

The state or quality of being composed.

a. in outward bearing, appearance, or demeanour.

b. in mind, spirits, etc.

c. of a people, etc.: Settled order, tranquillity.​

 

[solent clown]

Don't you have a dictionary?

From the OED:

composedness, n.

The state or quality of being composed.

a. in outward bearing, appearance, or demeanour.

b. in mind, spirits, etc.

c. of a people, etc.: Settled order, tranquillity.​

Ok, i have heard of the angry sea, a raging river even, oh, and as calm as a millpond But what the word was beingnused for in the post on here is beyond me