Water tank to pipe connection

[cityfarma]

I have a water tank on the top of a hill and a 2" poly pipe coming from the dam. My problem is that the current connection system has led to a loss of water due to movement of the tank. The tank sits on sand and has a piece of 2" hose with nut and tail on each end, approx 600mm long between the poly pipe and tank input. This was supposed to give a bit of flexability between pipe and tank. As the tank fills or empties, the hose is stressed and fittings leak.

I was thinking I should put a full loop in the connecting hose rather than a straight length. Does anyone have a better method?

Cityfarma

 

[BobRip]

I have a water tank on the top of a hill and a 2" poly pipe coming from the dam. My problem is that the current connection system has led to a loss of water due to movement of the tank. The tank sits on sand and has a piece of 2" hose with nut and tail on each end, approx 600mm long between the poly pipe and tank input. This was supposed to give a bit of flexability between pipe and tank. As the tank fills or empties, the hose is stressed and fittings leak.

I was thinking I should put a full loop in the connecting hose rather than a straight length. Does anyone have a better method?

Cityfarma

Can you show us a picture or describe exactly where the leak is occuring?

 

[kennyd]

How about using a longer hose to provide more flexibility? But I would think that a 600mm (24") hose is plenty long...

As Bob said, a picture is worth a thousand words

 

[cityfarma]

It is 200kms away and I don't have a picture.

The tank and pipe have threaded male fittings and the hose has threaded female fitting on each end. The hose fittings are similar to what you would have on you garden hose but bigger. The hose is heavy duty ribbed and not very flexible in short lengths. The pipe is buried and comes out of the ground at a slight angle. The tank fitting is just off the ground at the bottom of the tank. They are nearly in a direct line. The water leaks around the fitting as the movement appears to pull the threaded fitting apart (partly strips the thread).

I am thinking that a full loop of hose would take the stress off the fittings as things move.

Cityfarma

 

[Egon]

You could rig up a chicksand or pipe it in like gas meters so movement is allowed for.

The easiest/simplest is the loop you have already thought of.

 

[Soundguy]

Ditto.. a loop of flexible hose .. as long as it does not move so much as to pinch of fthe loop at some point.

Soundguy

 

[BobRip]

You could rig up a chicksand or pipe it in like gas meters so movement is allowed for.

The easiest/simplest is the loop you have already thought of.

I like the loop to, but I am not sure that is enough. I don't see how it would hurt and it is commonly used.

 

[SLOBuds]

The loop is a good idea.

There are actually flexible connections we can buy here in the states. In my example I have 2" and 4" PVC coming out of my tank. The tank sits on a cement pad, so my installers used rigid PVC connections to get everything hooked up.

But there are flexible attachments on the market which allow a small amount of movement. A few inches in either direction.

But since you are installing flexible material, go with the loop idea and you will be fine.

Something like this is available too.

 

[cityfarma]

I will be fitting a loop as in attached drawing. That should fix my problem. It will need to be about 1 - 2m long to give a reasonable bend. I will try it before I buy as 2" hose is not cheap. I will then have to lay it flat and cover it as the hose I am using is effected by the sun after a couple of years.

Thanks for all comments.

Cityfarma

 

[WayneB]

I will be fitting a loop as in attached drawing. That should fix my problem. It will need to be about 1 - 2m long to give a reasonable bend. I will try it before I buy as 2" hose is not cheap. I will then have to lay it flat and cover it as the hose I am using is effected by the sun after a couple of years.

Thanks for all comments.

Cityfarma

I did basically the same thing and went to an in ground swimming pool place and bought a piece of the flex pipe that they use. The sold it to me for around two dollars a foot. It was 11/2" inch pipe. I also purchased the cleaner and pipe glue they use along with fittings that would fit the black plastic pipe I have for the pipe run. Been in use for nearly a year now and no problems.