Dosing ferts inline

[26024]

In order to be safe it's best to use a 4 roller peristaltic pump but they get expensive.

Hi there,

Do you know by any chance how many rollers this D-D P1 pump does have?

 

[Hanuman]

Hi there,

Do you know by any chance how many rollers this D-D P1 pump does have?

I don't know for a fact but that's pretty easy to know. Just remove the head (blue part) from the main case. It's usually clipped.
I will bet a virtual beer there is 3.

 

[Hanuman]

Actually looking carefully at that product, I can confidently say that these D-D P1 pumps are actually rebranded pumps from Kamoer which is the actual manufacturer. They have 3 rollers for sure.

 

[26024]

I don't know for a fact but that's pretty easy to know. Just remove the head (blue part) from the main case. It's usually clipped.
I will bet a virtual beer there is 3.

Looks like three.

Here we go.

🍺

 

[zozo]

It might create a Venturi effect.

This can be used to advantage...



It uses a venturi to inject fertilizer inline... You would need a magnetic valve (Solenoid) on a timer instead of a dosing pump... Assuming the flow-through will be constant then calculate the amount of time the valve needs to be closed to inject x volume in ML fertilizer...

This is using physics to your advantage...

 

[blairgerman]

That would indeed be a very odd thing to do.

The mAcros outflow builds up with deposits and clogs, especially if there's a check valve on there. The application is usually for sump, not sure about into tank. For the siphoning, my history is it will flow in either direction against brand new pump heads, drain back into dosing containers or out into water. My check valves sit in the dosing containers and don't get stuck too often that way.

 

[dw1305]

Hi all,

It uses a venturi to inject fertilizer inline...

That would be the approach I'd use, it gets rid of any moving parts.

cheers Darrel

 

[26024]

Right,

So i’ve obviously ordered proper mouthing to this project.

Thanks to @bazz

No leaks, no danger, take it easy people.

Cheers,

Piotr

Quick update on this:

Finally finished on my second tank,

Happy days