Quietest lifting station for shower and sink

[keystroke]

A drain pipe was installed many years ago with the incorrect slope so it was recommended that I install a Saniflo Sanishower Flat. The specs say 45dB so I found the Sololift2 Grundfos D-2 which comes in at 40dB and also allows hotter water though, 50C, and seems to perhaps require less maintenance. My plumber said this should also work based on my setup. But I'm wondering if anyone knows of any quieter models out there or has any other advice for keeping these things running quiet. I don't have to pump very high so all of this seems overkill. I would rather not even use a pump but it would require vast changes and be very difficult to fix the issue otherwise according to my plumbers.

Thanks!

 

[ShaunCorbs]

@rpm is your man to ask I’m sure he will be along later to advise

 

[keystroke]

@rpm is your man to ask I’m sure he will be along later to advise

Thanks! I saw another thread where someone said the same thing about rpm! But unfortunately the thread did not specifically address this issue.

 

[quality]

rpm is your man. Nobody knows more about these thing than him

 

[keystroke]

Does anyone have any advice? Unfortunately this needs be decided so anything is useful. I'll try to send a message to rpm as well. Thank you!

 

[rpm]

Either pump will do, doubt if you would notice a 5db difference tbh. Keep off hard surfaces.

 

[keystroke]

Thanks so much for your help! It is good to hear from an expert.

 

[rpm]

Thanks so much for your help! It is good to hear from an expert.

Think they both discharge in the same pipe size(s) but check before you buy.

 

[Chuck]

it would require vast changes and be very difficult to fix the issue otherwise according to my plumbers.

Might be worth consulting a groundworks/drainage specialist and getting an actual quote. Domestic plumbers often don't want to do this type of work and can be overly negative.

It'll be fairly expensive but it's a one off cost and you'll soon forget about the pain. The pump, however, will require maintenance and will annoy/disturb you every time it fires up until it eventually drives you mad and you decide to move. At at point the purchaser knocks the cost of fixing the drain off their offer price so you end up paying anyway!

 

[rpm]

Might be worth consulting a groundworks/drainage specialist and getting an actual quote.

It'll be fairly expensive but it's a one off cost and you'll soon forget about the pain. The pump, however, will require maintenance and will annoy/disturb you every time it fires up until it eventually drives you mad and you decide to move. At which point the purchaser knocks the cost of fixing the drain off their offer price!

I give up!
5 words r

 

[keystroke]

Haha well I'll put the pump in the other room so it'll be behind a wall and I won't be able to hear it. Just determined that was possible. Only issue then is maintenance! I'm renovating lots of stuff so I'll stick with the pump for now. Never had one so will see how it is. Thanks!

PS RPM disagrees?

 

[rpm]

Haha well I'll put the pump in the other room so it'll be behind a wall and I won't be able to hear it. Just determined that was possible. Only issue then is maintenance! I'm renovating lots of stuff so I'll stick with the pump for now. Never had one so will see how it is. Thanks!

PS RPM disagrees?

That's fine as long as you can get the shower to drain and Im sure there is video out there somewhere re maintenance.
* Only when claptrap is posted *

 

[Harvest Fields]

I give up!
5 words r

I like that at the minute mate.

 

[OffshoreGas]

Either pump will do, doubt if you would notice a 5db difference tbh. Keep off hard surfaces.

The dB scale is logarithmic so a 10dB increase in sound level would be perceived as twice as loud so assuming both figures were true you'd expect to hear some difference.

Does anyone have any advice? Unfortunately this needs be decided so anything is useful. I'll try to send a message to rpm as well. Thank you!

The sound power generated by the pump is only half the story, lower frequency (deeper) sounds tend to travel further than high frequency (high pitched sounds). If the manufacture doesn't provide a frequency plot you can use pump speed as an indication (lower speed = lower frequency)

How you mount the pump will make a big difference, if its in contact with anything like pipe of floorboards they will tend to transmit the sound about the house. Speak to the manufacturer about anti vibration mounts if they don't supply you'll pick them up with a google search.

As others have said finding a fix that doesn’t need a pump would be a better answer. Hair and soap scum tend to foul pump impellers over time.

 

[rpm]

It`s a 5db not a 10db difference and still maintain the average Joe would struggle to hear the difference, more so if they were taking a shower at the time and yep the rest is pretty much already covered. Pump speed is pretty much the same which might have something to do with fact that last time I looked they had the same motor.

 

[keystroke]

Do you know what antivibration mounts are recommended for the 40dB pump? The installers insist it isn't a problem but they're wrong! So gotta advise.

 

[OffshoreGas]

Do you know what antivibration mounts are recommended for the 40dB pump? The installers insist it isn't a problem but they're wrong! So gotta advise.

Doesn't need to be anything fancy, you'll find high modulus anti vibration mounts from the usual scumbags.

With something like that I've get a couple of squares of moisture resistant MDF slightly bigger than the pump.

Screw the first to a solid surface, attach the second piece to the first with the anti vibe mounts. fasten the pump to the second piece.

 

[rpm]

Bit OTT isn't it plus you are raising the pump inlet by what, 50 - 60mm?
Why not use what comes in the box.

 

[OffshoreGas]

Bit OTT isn't it plus you are raising the pump inlet by what, 50 - 60mm?
Why not use what comes in the box.

Because the OP said it wasn't supplied with any and the vendor couldn't offer them? Didn't notice any space restriction when read thought it.

 

[rpm]

Because the OP said it wasn't supplied with any and the vendor couldn't offer them? Didn't notice any space restriction when read thought it.

So can I presume you've never installed one then and shower trays are generally low to the floor m8.

 

[OffshoreGas]

So can I presume you've never installed one then and shower trays are generally low to the floor m8.

Yes I've installed a few thanks, OP hasn't stated any limit on space under floor.

 

[Harvest Fields]

Calm down pleas boys. It’s only a shower tray.

 

[rpm]

Yes I've installed a few thanks, OP hasn't stated any limit on space under floor.

You carry on then m8, guess I should be thankful that plumbers like you keep me busy.

Calm down pleas boys. It’s only a shower tray.

Don't need your intervention here.

 

[keystroke]

Thanks again to everyone for their help. Really glad I found this forum.

 

[centralheatking]

A drain pipe was installed many years ago with the incorrect slope so it was recommended that I install a Saniflo Sanishower Flat. The specs say 45dB so I found the Sololift2 Grundfos D-2 which comes in at 40dB and also allows hotter water though, 50C, and seems to perhaps require less maintenance. My plumber said this should also work based on my setup. But I'm wondering if anyone knows of any quieter models out there or has any other advice for keeping these things running quiet. I don't have to pump very high so all of this seems overkill. I would rather not even use a pump but it would require vast changes and be very difficult to fix the issue otherwise according to my plumbers.

Thanks!

The collective wisdom on here says put the pump on a paving slab on a rubber mat and then see if this helps before you change the pump set. centralheatking

 

[rpm]

The collective wisdom on here says put the pump on a paving slab on a rubber mat and then see if this helps before you change the pump set. centralheatking

That is for shower pumps which are different sound & vibration wise this is a new install, not replacing or changing.
Pumps have ativations levels, the case here is the shower tray needs to drain by gravity into the pump to the required depth to activate the pump, all this talk of raising the pump with (or without) anti- vibration feet is counter productive unless you are prepared to raise the shower tray. As long as the pump is not sited directly on joists or in a hard walled room it will be fine on the pads supplied and in the worst case carpet underlay works well.

 

[Dan]

Be polite about your criticism people. Threads end up being blown way out of whack just because a smiley face wasn't used right or a comment was seen as harsh when it wasn't intended on being meant as harsh.

It's a shame tarnish awesome advice with crappy unthought out replies.

 

[rpm]

I am the same in real lfe Dan, a spade is a spade. Too many wannibies here sometimes telling people scrap. Plenty of other sites for that nonsense.

 

[Harvest Fields]

OP seems happy with advice that has been given. Thread closed.