Eheim 1260/2260 volute cover.

[thacarter546]

Just curious if anyone has changed their volute cover on their 1260 or 2260 to a 1262/2262 volute cover?

The internet myth is that they are the same pump aside from this 9 dollar part.

I did the swap last night, and it does flow more, albeit not what I would expect from a 1262. Without a flow meter capable of 500+ gph I'm not sure how much. This was simply an experiment. It did have an unexpected effect however. My 2260 went from having a mild hum that was tolerable to deadly silent.

If someone has done this have you measured power consumption? I may go get a killawatt tomorrow to see if it jumped from 65 to 80 watt.

To answer the question I see coming up: yes I did reseat the 1260 volute to make sure the noise was not from a misaligned shaft. It was not.

I did not need or want extra flow. This was just something I did to kill time. However I am leaving it on for the noise reduction.

 

[shookONES]

I just did this the other day and was planning on making a post this week. I can't comment on noise as the pump in original, unmodified form was dead silent for me. The flow has increased considerably, though.

 

[deeda]

There are actually 2 differences between the 1260 and 1262 pumps, wattage and volute orifice size so while you may see a difference in the output, it won't be the same as with the higher wattage pump.

The 1260 pump is 65 watts and the 1262 pump is 80 watts.

Ideally you would want to use a flow meter to compare the difference but it could also be accomplished by timing how long it takes to fill a measured container, such as a bucket, and compare the results.

 

[HarleyK]

Without a flow meter capable of 500+ gph I'm not sure how much.

How about a 5 gal bucket and a stop watch? If it takes 28 sec to fill to the rim then your output is 635 gph, and the 1262's 900 gph would fill the 5 gal in 20 sec. That eight second difference is very easy to measure.

 

[JK47]

How about a 5 gal bucket and a stop watch? If it takes 28 sec to fill to the rim then your output is 635 gph, and the 1262's 900 gph would fill the 5 gal in 20 sec. That eight second difference is very easy to measure.

Beat me to it bro. Old school but rock solid approach to measuring. I do something similar to measure drop off in my drip system when the sediment filters start to slow

 

[thacarter546]

I'm certain the wattage will change with the volute cover, I forgot to grab a killawatt while I was out today.

 

[thacarter546]

The bucket method wouldn't exactly be accurate in this situation. I have my uv, my co2, and my heater all plumbed in the return line. The disconnect is six inches from the canister I don't wanna run a new return line for a test.

 

[deeda]

How will the wattage change with the different volute cover?

Pump output from the mfg. is measured with no head pressure so will change once you add height and restrictions such as on the tank.

You could just use a 2 quart pitcher and hold it under the output spout in the tank and time how long it takes to fill and then multiply X 2 to get a gallon's worth of water.

 

[HarleyK]

The bucket method wouldn't exactly be accurate in this situation. I have my uv, my co2, and my heater all plumbed in the return line. The disconnect is six inches from the canister I don't wanna run a new return line for a test.

Doesn't need to be accurate.
Must just be able to detect a difference.
No matter the plumbing, you'd see an increase in 40%. That'd be almost half again as much as the original flow.

I've done the bucket method on my 2262, with similar gadgets attached in line.
Where there's a will, there's a way.

 

[HarleyK]

Any update?
T thacarter546
shookONES

Did one of you measure power usage or flow?

I am still sceptical that the removal of a physical part changes the power of the pump. Flow might be better because there is less resistance to flow, but does it have the "torque" of the 1262 pump, i.e. can it power through?