Recirculation Pump Comparison 1073.040 vs 1073.050

[schwenkl]

Tunze webpage shows the 1073.040 as variable voltage with variable flow, but most of the online vendors for purchase show as one flow rate and power consumption.

Tunze webpage:
Pumping power: 300 to 3,000 l/h (79.2 to 792.5 USgal./h).
Energy consumption: 16 to 42 W (18 to 47 W)

Online vendors:
Pumping capacity: 3,000 l/h (792 USgal./h).
Energy consumption: 42 W

Tunze webpage for the 1073.050 shows different flow rates and power consumption for 18v and 24v but online vendors all seem to have the 24v rate as lower than the 18v flow.

Tunze webpage:
Flow rate at 18 V: 900 to 2,200 l/h (237.7 to 581 USgal./h).
Flow rate at 24 V: 1,100 to 3,000 l/h (290.5 to 792.5 USgal./h).

Online vendors:
Flow rate at 18 V: 900 to 2,200 l/h (238.7 to 581 USgal./h)
Flow rate at 24 V: 1,100 to 3,000 l/h (290.5 to 475.5 USgal./h)

I would assume I would use max depending on head loss, but like the controllable option.

Also, the head loss graphs online are hard to read. Could you give me for each pump at around 5 foot?

I am looking into switching over from my Eheim, which has served me very well but I love my 6055's Tunze even more.....

Tank is a new setup 120 gallon currently with Eheim 1262.

 

[rvitko]

1073.040 has a mechanical flow adjustment and the wattage drops as the flow is reduced. It is available in 115V 60Hz in the North America and 230V 50Hz in Europe and Asia/Pacific.


1073.050 is a DC pump and includes a power supply that is auto adapting from 100-240V. The flow is the same as the 1073.040 at 24V, however the head pressure is much higher and the flow drops much less with head pressure. There was a typo in the earliest info for the 1073.050 but what is now on the tunze.com site is correct.

At 5ft a 1073.040 will do about 400 gph, a 1073.050 will do about 470. I converted 5ft to meters and it is about 1.52, I used 1.5, at 1.5 a 1073.040 does 1.5 cubic meters/hour and a 1073.050 does about 1.8 cubic meters per hour. I say about due to conversion/round off losses/gains.

 

[schwenkl]

Thanks Roger. Now comes the stupid (or at least the naive) question.

So the 1073.050 has a voltage flow adjustment, is it just the two listed or more like on my 6055's?

 

[rvitko]

It is like a 6105, there are 12, 18 and 24V jumpers and also a potentiometer on the black junction box (missing from 6055) so you can dial it in fairly precisely.

 

[schwenkl]

At 5ft a 1073.040 will do about 400 gph, a 1073.050 will do about 470. I converted 5ft to meters and it is about 1.52, I used 1.5, at 1.5 a 1073.040 does 1.5 cubic meters/hour and a 1073.050 does about 1.8 cubic meters per hour. I say about due to conversion/round off losses/gains.

Roger, I don't see graphs for the other voltage options. I assume what you gave me above is at full bore 24v. Could I get a calculation for 18v with 5ft of head pressure. I went with two of these pumps and will now be tuning them together, while trying to achieve the perfect tank turnover with lowest watt consumption, so that one of the two can be on my UPS with one 6055 to keep some flow during a power outage.

 

[rvitko]

Unfortunately the only chart is for 24V, for the pumps maximum capacity. We don't have a chart for 18 or 12V.

 

[saltwater101]

Do you think 1073.040 will work as return pump for 135 gal (soon to be FOWLR) tank with 5' head? Thanks.

 

[rvitko]

Yes, but the flow rate will only be about 400-450 gph. It would work in terms of running the water through the filter a sufficient amount of times but it is on the low side and 2 would be the ideal.