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96860172 has been discontinued
Discontinued January 7, 2022
This product was discontinued by the manufacturer.
MANUALS (4)
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Direct Replacement:
SCALA2 3-45 Water Booster Pump w/ NEMA 5-15P Plug (115V)
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Product Highlights
–
POM + 25% Glass Fiber
115V
3/4 HP
1" MPT
109 MAX PSI
95°F Max Temp
Description
–
NOTE: See PDFs for pump performance curves
The Grundfos MQ is a compact, all-in-one, flow based, plug-and-play pressure boosting system, designed for domestic water supply applications such as homes, cabins, cottages, farms as well as gardens. The pump is suitable for pumping of potable water and rain water. The MQ, with it's smart operation is both easy to install and reliable.
The MQ is a complete, all-in-one unit, incorporating pump, motor, diaphragm tank, pressure and flow sensor, controller and check valve. Built in safeties ensure long life of the pump. These safeties include: dry running; excessive temperature; any overload conditions. The MQ is a self priming pump and needs no priming other than that at installation. The MQ is a plug-n-play system.
Features
The Grundfos MQ is a compact, all-in-one, flow based, plug-and-play pressure boosting system, designed for domestic water supply applications such as homes, cabins, cottages, farms as well as gardens. The pump is suitable for pumping of potable water and rain water. The MQ, with it's smart operation is both easy to install and reliable.
The MQ is a complete, all-in-one unit, incorporating pump, motor, diaphragm tank, pressure and flow sensor, controller and check valve. Built in safeties ensure long life of the pump. These safeties include: dry running; excessive temperature; any overload conditions. The MQ is a self priming pump and needs no priming other than that at installation. The MQ is a plug-n-play system.
Features
- Complete system
- Low noise
- Built-in protective functions
- Automatic reset
- Compact, easy to install
- Requires no accessories
Specs
–
| Voltage: | 115V |
|---|---|
| Horse Power: | 3/4 |
| Inlet Size: | 1" MPT |
| Max Pressure (PSI): | 109 |
| Max Temp (F): | 95°F |
| Material: | POM + 25% Glass Fiber |
| Type: | Booster Pump |
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
You May Also Need
11 Replacement Parts
Shaft Seal Kit for MQ Pumps
SKU: 96450696
GrundfosMQ Pressure Tank
SKU: 98893507
GrundfosMQ Flow Sensor Kit
SKU: 96450698
GrundfosMQ Priming/Drain Plug Kit
SKU: 96457923
GrundfosTerminal Box Cover Kit for MQ3-45
SKU: 96488399
GrundfosHydraulic Parts Kit for MQ3-35
SKU: 96525930
GrundfosNon-Return Valve for MQ Booster Pumps
SKU: 96526663
GrundfosPort Cover
SKU: 98288904
GrundfosCapacitor, 40uF (60 Hz)
SKU: 97523217
Grundfos
Need help finding a replacement part?
Fill out the part request form and someone will get back to you shortly.
PART REQUEST FORM
Product Reviews
4.68 out of 22 reviews
95% would recommend this product
5 star
82%
4 star
14%
3 star
0%
2 star
0%
1 star
5%
Most Liked Positive Review
Excellent
I bought this to replace one like it that I had used continuously for 14 years. It was easy to disconnect the old one and put the new in its place. This is the best pressure system for household water that I have ever had. The stainless pump does not make my water rusty as so many others do. It is quiet, dependable, effecient, trouble-free, and gives m ethe pressure I want.
VS
Most Liked Negative Review
Worked well... for a few weeks.
Bought pump as a direct replacement for the very old unit. New pump and pressure was Great! I definitely need the pressure reducer inbetween the pump and the house. After a few weeks the pump was dead. The motor cycles when turned on, but the pump never activates. Even when the supply pressure is nil (or negative, as in, it's a good thing there's a backflow device on the pool's water supply). I thought I could swap in the pressure sensor from the old pump to fix the problem but that piece is epoxied in place. Now I'm in return/warranty limbo and looking at eating the cost of the pump. Not cool.
Showing 1-10 of 22 reviews
Great Product
This pump boosted my water pressure. I also added a pressure regulator to make sure the pressure did not get to high. Works great.
Grace
Hermitage, PA
6 years ago
Verified Buyer
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I would buy this product again!
It works as decibed!
Ram Jet
Lebanon, N.H.
7 years ago
Verified Buyer
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Great pump
I would highly recommend this pump
WaterDave
Jensen Beach Florida
7 years ago
Verified Buyer
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I would buy this product from supplyhouse again
The Grundfos water pressure pump I ordered is working very good, working smoothly with low noise level. I've always used this type of pump and wasn't able to find it locally when my last pump went out but very happy I found it through Supply house, ordered it and received it on the day it was specified to arrive. Good product :)
Meranda
Kykotsmovi, AZ
7 years ago
Verified Buyer
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Absolutely as stated.
The price, delivery, and product were exactly as stated.
What a refreshing experience.
Ted
Albuq. NM
7 years ago
Verified Buyer
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Worked well... for a few weeks.
Bought pump as a direct replacement for the very old unit. New pump and pressure was Great! I definitely need the pressure reducer inbetween the pump and the house. After a few weeks the pump was dead. The motor cycles when turned on, but the pump never activates. Even when the supply pressure is nil (or negative, as in, it's a good thing there's a backflow device on the pool's water supply). I thought I could swap in the pressure sensor from the old pump to fix the problem but that piece is epoxied in place. Now I'm in return/warranty limbo and looking at eating the cost of the pump. Not cool.
Paul the science teacher
Palmdale, CA
8 years ago
Verified Buyer
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Great pump
Had the Scala 2 and had nothing but trouble with it.
Replaced it with this pump and all the problems went away
Johnniej
Chicago
8 years ago
Verified Buyer
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Great Pump
I bought this pump from Supply House to replace an existing pump. The service and speed of deliver were great. The pump is exactly what we were looking for.
Bill H
Boston, MA
8 years ago
Verified Buyer
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Excellent Customer Service
They provided excellent customer service on the return of a defective item. Received the replacement in a very timely matter.
J
Amarillo, TX
9 years ago
Verified Buyer
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Solid pump
WE have a lot of elevation change on the farm, with the house roughly 100' above the shop. So the well pressure is set to that desired at the shop, and this boost pump is in the house to bring that pressure up without over pressurizing the pipes in the shop. But just as important as the pump itself is the service provided by SupplyHouse. One pump seal failed after a few months of service - stuff happens. SupplyHouse shipped a new one the same day I called, I kept the leaky one in service until the new one arrived, and then shipped that back to them. All with one easy phone call and no charge for anything. I WILL use SupplyHouse again.
Pooh
Tennessee
11 years ago
Verified Buyer
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Product Q&A
6 Questions6 Questions
Q: Will this pump work for domestic use on a spring-fed, 2.5 bath, 3-story home(including the basement)? Spring is roughly the same elevation as the main floor, and about 60' from the house. Pump will be located in the basement.
Asked by Josh 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffThe MQ3-35 will provide a boost of approximately 48 psi of water pressure at the discharge of the pump. This may not be enough pressure for the home.
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Q: does this have a warranty?
Asked by Steve the Lawn man 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffAs noted in the installation manual, the warranty is for a period of 24 months from date of installation, but not more than 30 months from date of manufacture.
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Q: What is the output pressure of this pump amd can it be adjusted?
Asked by NEALP 14 years ago
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Verified Reply- PexSupply StaffA standard residential system will have a system pressure of about 60psi. Every system is different. The Max pressure for this unit is 109 psi.
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- Retired Dave
These pumps have fixed uplift of approx. 45lbs. You can put a pressure reduction valve on the input side to control input pressure. You can also put one on the output side but back pressure may be an issue. In put side is easy and put a pressure gauge on out put side. Pressure gauge 10.00 and reduction valve will run from 70.00 to 110.00 at Home Depot depending on 3/4 or 1" size.
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Q: I’m on town water supply but at the very end of the line with very low water pressure and the supply volume is 45 gal/hr. Would the supply volume be enough for the Grundfos MQ3-35/115v pump to work or would I need a reservoir tank for the pump to draw from?
Asked by Grant 14 years ago
Add your answer
Verified Reply- PexSupply StaffThe MQ has a Maximum inlet pressure of about 40psi. It is recommended to put a pressure reducing valve before the pump so that the pump is always working off of the same incoming pressure. It is also recommended to set the Pressure Reducing Valve at about 25psi - 30psi. As for the flow rate, it sounds like you may want to put a tank in. That pump will move close to 11gpm - 16gpm. That supply would not keep up with the MQ.
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Q: What is the minimum water supply required to the intake of the MQ3-35/110 volt so it can work without cavitations
Asked by Grant 14 years ago
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Verified Reply- PexSupply StaffProvided that you are not at high altitude, the MQ3-45 is capable of pulling water from the MAXIMUM vertical lift of 26 feet. Obviously, you would want to be less than that for normal operation. This is assuming that the pump is primed, i.e., filled with water as described in the manual. Cavitation is not related to this. If the inlet pipe is the same diameter as the inlet to the pump, cavitation should not be a problem.
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Q: wHAT IS THE GAL/MIN?? FOR THIS PUMP
Asked by TOM 14 years ago
Add your answer
Verified Reply- PexSupply StaffIt looks like 18 gpm at 15 psi, 10 gpm at 35 psi, and 4 gpm at 45 psi.
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