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$91.58 each
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Product Highlights
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MQ3-45
Description
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Grundfos 96634763 Fitting Kit for MQ3-45 and MQ3-35 1" NPT Pumps
A Grundfos accessory fitting kit used to replace/restore the inlet/outlet connection fittings on compatible Grundfos MQ pressure booster pumps with 1" NPT connections.
Key Features:
Compatibility & Applications:
Installation & Operation Notes:
Maintenance & Troubleshooting:
User Reviews & Q&A Summary:
A Grundfos accessory fitting kit used to replace/restore the inlet/outlet connection fittings on compatible Grundfos MQ pressure booster pumps with 1" NPT connections.
Key Features:
- Fitting Kit (Accessory) for use with MQ3-45 and MQ3-35 1" NPT pumps.
Compatibility & Applications:
- Listed for use with Grundfos MQ3-45 and MQ3-35 pumps with 1" NPT connections.
- Must only be used where the manufacturer specifies this exact part number 96634763 for the specific MQ pump connection type (including 1" NPT).
Installation & Operation Notes:
- Installation should be performed by a qualified technician/plumber familiar with pressure booster pump service.
- Follow the applicable Grundfos MQ pump service/installation documentation for correct disassembly, fitting orientation, and leak-checking.
- Manufacturer MQ pump documentation emphasizes pump setup items relevant to servicing connections, including:
- The pump has an accessible priming plug for filling the pump with water before start.
- The pump has a drain plug intended to help prevent freezing damage.
- After replacement, verify proper sealing at all joints and avoid over-tightening where sealing depends on an O-ring.
Maintenance & Troubleshooting:
- Common reasons for replacing these fittings (from customer feedback) include:
- Leaks around the suction/inlet fitting or other connection points.
- Cracked/broken fittings during maintenance or service.
- If leaking continues after replacement, the sources indicate the importance of confirming the sealing method (e.g., O-ring condition/seating) rather than relying on thread torque alone, and confirming the kit matches the pump's 1" connection configuration.
User Reviews & Q&A Summary:
- Reviews commonly describe the kit as a correct fit for MQ pumps and helpful when a fitting breaks or leaks, with some users keeping leftover pieces as spares.
- Q&A themes focus on identifying correct MQ-related replacement parts and confirming that the kit is correct for MQ3-45/MQ3-35 with 1" connections, and directing users to the correct MQ documentation/manual resources for installation.
Specs
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| Type: | Accessory |
|---|---|
| Used With: | MQ3-45 |
Questions?
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Product Reviews
4.52 out of 23 reviews
100% would recommend this product
5 star
70%
4 star
22%
3 star
4%
2 star
0%
1 star
4%
Most Liked Positive Review
Recommend this product
We use the Grundfos Pump #96860195, (MQ3-45) for a boost pump on one of our travel boats. The Kit # 96634763 we ordered came in handy for us. We tried to do some maintenance on the water system and broke off one of the fittings. The kit contains the fitting that we broke plus a few extra parts. We will store the extras for later use, but the main fitting we needed was used and the system is back up and running as it was. Glad to have found this kit.
VS
Most Liked Negative Review
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I wish that I didn't have to buy the whole expensive kit
A Fitting broke and to get that fitting I had to buy a whole kit. The piece that I used worked great! However, if Grundfos had made it clear that this fitting was using an "O" ring to make the seal and not the threads, I would not have over tightened it in the first place but rather I would have checked the "O" ring.
Showing 1-10 of 23 reviews
si compraria otra vez el producto es original.
is good product is the same thank you
victor bejarano
santa rosa beach fl
2 years ago
Verified Buyer
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Maybe
The couple I needed worked as designed. It would have been nice to just buy the part I needed only.
RD
Ohio
3 years ago
Verified Buyer
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Perfect fit
Product fit perfect the I have made many phone calls to the manufacturer of the pump and they are no help but Supply house had the product in stock
Doug
New Jersey
3 years ago
Verified Buyer
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Product was as ordered. Delivery was speedy!
Supply House came through again with having my part in stock and delivering faster than my expectation. Great experience.
Duhwain
Knoxville, TN
4 years ago
Verified Buyer
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easy
Easy direct replacement part for seals on fittings.
nope
pa
4 years ago
Verified Buyer
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Correct OEM parts and overnight delivery
My MQ-45 Grundfos sprung a leak at the input fitting making a mess in my crawl space and wasting water. Supply House was recommended to get the replacement part. They came through with fast courteous results. I have water again! This kit of parts was OEM and in new condition. I will use S H in the future.
CA Homeguy
NorCal
4 years ago
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Correct description correct fit
In the world of multiple version of equipment this part fit my pump as stated in the info on the web site. Quality parts, quality service, quick delivery...what more could a person ask!
Me
VA
4 years ago
Verified Buyer
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Excellent Service
Very fast, professional and friendly service with competitive prices.
MTF
Eden, Vermont
5 years ago
Verified Buyer
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Had what I needed and shipped it same day
The nose of my well pump cracked and I stood the chance of losing 20,000 gallons of rain water, our drinking supply. Not only did they have the part for a good price but they shipped it the same day. How can you beat that for service!
Stuart
Axtell, Texas
6 years ago
Verified Buyer
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Didn't need all parts
I only needed a plug and o-ring but the price was right. Shipping was fairly fast. Locally the plug was almost as much as the kit.
Jack of all.......master if none
Billings Montana
6 years ago
Verified Buyer
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Product Q&A
5 Questions5 Questions
Q: I HAVE A GRUNDFOS MQ3-45 THAT I NEED TO PURCHASE AN INTERNAL NON RETURN VALVE FOR. CAN YOU TELL ME IF YOU HAVE THESE AND HOW TO ORDER. THANKS
Asked by CANDY 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffThe MQ is a complete, all-in-one unit, incorporating pump, motor, diaphragm tank, pressure and flow sensor, controller and check valve. So the pump came with the non return valve.
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Q: I need the manual for the MQ3-35, so I can install a kit.
Asked by Dave 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffPlease refer to sku 96860172 for the installation manual for the MQ3-35. It is listed under the resources section of the product overview.
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Q: I am looking for the small built in pressure tank that goes in these pumps. It looks like a car oil filter. It also spins off like a oil filter. Trying to locate 1. John
Asked by farmer 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffThe part number for the replacement pressure tank is sku 98893507.
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Q: Are replacement starting capcitors available for Grundfos MQ3-45
Asked by Don 11 years ago
Add your answer
Verified Reply- SupplyHouse StaffAs per the parts breakdown the spare capacitor is sku 97523217.
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Q: Is this kit the same as the parts book listing --Suction port with check valve? My pump leaks around this fitting and I wish to replace it. Is this what I need to buy? Thank you.
Asked by Bert 11 years ago
Add your answer
Verified Reply- Supplyhouse Staffif you have a MQ3-45, MQ3-35, w 1" connection this is the correct kit
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