Ambitious water feature - pumps etc

[Adam2]

Not sure if right area of forum...

 

Building a waterfall type water feature - using large format tiles 2.5m high and 1m wide, 2 of these side by side. There's a waterfall 1.2m wide reservoir with blade going through a letterbox cutout in the middle of the tiles.

 

So far we're building the supporting frame and have a waterfall

 

I'm looking for advice on the other bits I'll need:

 

Pump - to lift to 2.5m

hose

splitter to feed into the 3 inlets at the top

a hose to waterfall connector - these need a 30mm o/d male fitting but I can't seem to find this

 

So any recommendations on reliable pumps and thoughts on the ~30mm fitting appreciated - not sure if there is an imperial size that is needed (have also asked waterfall vendor but awaiting response).

 

cheers

[Big Jimbo]

Sorry, i can't help but try waterworld. I think they are online. Just don't do what i did. I wanted a stream across my old garden with a bridge. Sump at one end where it looked like it was going under the fence. About 2 meters wide. I wanted the other end, which was a wall covered in Ivy, to be where the water was coming from. I went into Waterworld, and said i wanted the biggest pump and pipe that i could drop in my sump end. They wanted to know things like my flow rate required etc. I told them not to worry about all that, and just give me a huge big pump. The pipe was about 75mm diameter. When i fitted it, and turned it on, i wanted a right good trickle through the Ivy. If i recall, i hit a house about 100 foot away. it was more powerful than a fire hose. So whatever you do get it sized properly.

[saveasteading]

Commercial pumps have accurate graphs for distance and height. 

A little height equates to a lot of distance.

For some reason, pond pumps are vaguer on these specifics. Perhaps because they are selling filters and sprinklers to go with them.

 

[ProDave]

You wait until you work out the size of pump needed to provide that lift and flow, and the electrical power it would consume.

 

I would only consider it if such a thing only ran in the daytime in the summer when it was likely I had surplus from the solar PV to power it.

[SteamyTea]

1 hour ago, ProDave said:

You wait until you work out the size of pump needed to provide that lift and flow, and the electrical power it would consume.

MGH

Where M = mass flow rate kg.m^-1.s^-1

G = gravity, call it 10 m.s^-2

H = height in metres, m

 

 

[dpmiller]

if it's oversized a bit you can throttle both flow and pressure. Inefficient yes, but you can do it if you need to.