Iwaki Question

[fftfk]

Would either the Iwaki 30RT or 40RT work for a basement sump? I calculated about 15 feet of head. The tank is 300 gallons (before rock, etc) and sump will be approximately 60-90 gallons. I found these flow charts but not sure if the Japanese version is the same as the US version - https://iwakiamerica.com/Literature/MD_WMD/MD3040.pdf

Second question - would they be quieter than a 100RT? I initially tried to go with one of those and the thing is so loud it is unusable. Plus - the amount of water it pushed was insane...would have had to dial it back significantly.

 

[Potatohead]

15' is too much for the 30

A 40 will get you about 1.5x tank turnover per hour, a 55 will get you about 2x, a 70 will get you about 3.75x

 

[fftfk]

Thanks! Any idea about the noise level? I was putting the 30 and 40 in one design bucket and the 55, 70, and 100 in a different design bucket. Not sure if power draw would make the pumps louder as the they all spin at the same RPM per the specs.

 

[Potatohead]

I've only ever heard the 55 and it would be fine for a basement. I can't imagine they're THAT much different. Make sure you sit it on a silicone pad and use silicone hose for the last foot or so of the connections to the pump.

 

[fftfk]

Thank you

 

[DCR]

The 20's and 30's have enclosed motors and are quieter than the fan cooled 40's and higher. Unfortunately I think they are way too small for a 300 gal tank. The noise goes up as you go up in size but for a basement it may not matter. Super long lived reliable pumps but make sure you have a guard over the suction bulkhead as snails can break the impeller (personal experience)

 

[Jerry Barnes]

Got 300 with sump in basement. I’ve used a 70 for 5 years. Those pumps are amazing. Yes they are noisy but that’s typical for pumps that have a high head pressure.

 

[fftfk]

Thanks for the responses. do You have the pump on a table/bench or the floor? I had the 100 running and it was way too loud…could clearly here it upstairs with 2 doors shut between the pump and listening spot. I had it hard plumbed to the located on a Home Depot heavy duty bench. I’m wondering if the bench was making it louder.

 

[Jerry Barnes]

My sump/pump sits on a plywood platform elevated roughly 16" off the floor. I have the pump sitting on a 3/4" thick rubber pad. You mention "hard plumbed" which caught my eye. All your pipe running from the sump to the pump and at least a couple feet exiting the pump should be "soft" plumbed. My pump is connected to the sump with a one foot length of flex PVC, the output is run from the basement to the tank via this same type of pvc. It glues just like normal pvc but won't transmit noise.

 

[jda]

I soft plumb basement pumps with the same diameter output as the pump. This cuts back on vibration/noise, head pressure and stuff. If you flexible pipe gets up against a floor joist, subfloor or ventilation duct, it will stay quiet.

I use Panworld 150/BlueLine 55 for basement sumps on platforms. Pretty low wattage in the low 100s and about 1000 GPH of flow up a story. Iwaki should have a nearly identical pump, but I am sorry that I don't know the number. The next step up is about double the power... so I would avoid that unless you really have to have it.

Don't be one of those people who buys the hugest pump out there for 400 watts and then complains when they replace it that the new pump was so much lower power. If you choose well from the start, there is no need to replace them.

 

[mandarin417]

My sump/pump sits on a plywood platform elevated roughly 16" off the floor. I have the pump sitting on a 3/4" thick rubber pad. You mention "hard plumbed" which caught my eye. All your pipe running from the sump to the pump and at least a couple feet exiting the pump should be "soft" plumbed. My pump is connected to the sump with a one foot length of flex PVC, the output is run from the basement to the tank via this same type of pvc. It glues just like normal pvc but won't transmit noise. T

Sounds like you are running flex PVC the whole way up to the tank from the basement? How did you manage the pipe "memory" to get the bends out? Is the 1" pipe outer or inner diameter? Thanks!

 

[Blue Spot Octopus]

For Eheim type tubing I put it in a larger diameter PVC tubing put a cap on one in and pour near boiling water in it, remember this is Eheim tubing other tubing may after a different affect.