• +1 (888) 818 POOL
  • swimmingpoolsteve@gmail.com

Pentair SuperFlo Variable Speed Pump Test (dual suction lines)

Pentair SuperFlo Bench Test 240V 2 inch suction
This is a continuation of variable speed swimming pool pump bench tests to determine flow rates and electrical consumption for variable speed pool pumps operating at various RPM speeds. This article is looking at a bench test that has this pump installed with dual suction lines, a 2" suction line and a 1.5" suction line, and a single 1.5" discharge line. For this test the pump is installed with a 240 Volt electrical service. To see these additional bench tests you can view these articles:


Pentair SuperFlo Bench test 1.5" pipes / 240 Volt

Pentair SuperFlo bench test 1.5" pipes / 120 Volt


In this bench test the SuperFlo has been provided with a both an 1.5" and a 2" suction line, and while the pump still only has a single 1.5" discharge line, you can see an increase in both flow rate and efficiency for a given RPM setting. The point of this test is to illustrate just how important pipe size is and how you can move more water for less electricity with larger plumbing lines. 1.5" pipes are extremely limiting, especially at higher flow volumes where the friction, turbulence and resistance to flow is significant. Flow rate is the most important number that pool owners need to know in order to get the most value from the variable speed pump, however almost no residential pools have flow meters. For more information about the importance of flow and flow meters you can read this article about swimming pool flow meters.





Pentair SuperFlo Variable Speed Test

Voltage - 240 Volts
Suction Line - Dual (2" Manifold with 1.5" and 2" pipes)
Return Line - Single 1.5"


750 RPM
Flow Rate - 14 GPM
Current Draw - 0.88 Amps
Power Consumption - 92 Watts


1000 RPM
Flow Rate - 18 GPM
Current Draw - 1.01 Amps
Power Consumption - 134 Watts


1250 RPM
Flow Rate - 28 GPM
Current Draw - 1.17 Amps
Power Consumption - 188 Watts


1500 RPM
Flow Rate - 36 GPM
Current Draw - 1.42 Amps
Power Consumption - 264 Watts


1750 RPM
Flow Rate - 43 GPM
Current Draw - 1.81 Amps
Power Consumption - 372 Watts


2000 RPM
Flow Rate - 50 GPM
Current Draw - 2.38 Amps
Power Consumption - 514 Watts


2250 RPM
Flow Rate - 57 GPM
Current Draw - 3.12 Amps
Power Consumption - 692 Watts


2500 RPM
Flow Rate - 64 GPM
Current Draw - 4.05 Amps
Power Consumption - 915 Watts


2750 RPM
Flow Rate - 70 GPM
Current Draw - 5.27 Amps
Power Consumption - 1200 Watts


3000 RPM
Flow Rate - 77 GPM
Current Draw - 6.63 Amps
Power Consumption - 1510 Watts


3250 RPM
Flow Rate - 85 GPM
Current Draw - 8.30 Amps
Power Consumption - 1900 Watts


3450 RPM
Flow Rate - 92 GPM
Current Draw - 9.88 Amps
Power Consumption - 2260 Watts



What is most interesting to note is that the flow rates for this bench test are all greater than the flow rates from the bench tests that use only 1.5" suction lines. Having multiple suction lines, and especially having at least one larger 2" pipe, makes a significant improvement in flow for a given amount of power consumption. Further to this, while the maximum flow rate achieved was greater than any flow rate achieved using only 1.5" suction lines, the greatest improvements in efficiency were all at the lower RPM range. While having multiple suction lines, and 2" suction lines will increase your highest potential flow rate at maximum RPM, the low RPM flow rates see the most substantial improvements.


Also worth noting on this bench test is that the maximum volume of water we were able to move through a single 1.5" suction and return pipe was 82 gallons per minute but in this test we were able to achieve 92 GPM by having multiple suction lines. This is almost a 10% increase in potential flow rate while only changing the suction side of the pump - the discharge side still only has a single 1.5" line! Be sure to subscribe to the Swimming Pool Steve YouTube Channel to see if changing the size of the suction and return pipes, or changing the number of pipes used, has a measurable result on the electrical consumption and flow rates.


240 Volt Pentair SuperFlo bench test

120 Volt Pentair SuperFlo bench test

Swimming pool flow meters

How much electricity does a pool pump use

What happens if you run a pool pump at 1000 RPM

Running a pool pump 4 hours per day

How does a variable speed pump save you money

Variable speed pump schedules




Swimming Pool Steve

If you want to continue learning about pools and spas from an industry expert follow swimming pool Steve on Facebook, Twitter and YouTube


Endorsed Brands From Swimming Pool Steve


The following links and products are to affiliates of the Swimming Pool Steve website. These are brands, products and services hand selected by Steve for endorsement. Please note that these endorsements can include monetary compensation, affiliate links and referral fees to Swimming Pool Steve, however there is zero additional cost to you should you use one of these products or services. Income generated from these links helps to keep this pool and spa resource available for everyone. To have your product or service considered for listing here as an endorsed brand email SwimmingPoolSteve@gmail.com.

Amazon Disclosure Statement - As an Amazon Associate I earn from qualifying purchases.


InTheSwim.com
www.InTheSwim.com

If you need to order swimming pool equipment, parts or chemicals online then you should choose to buy from a specialist that deals exclusively with pool and spa products. InTheSwim.com would be my recommendation to pool owners looking to shop online for pool and spa supplies.

- Swimming Pool Steve


Basecrete flexible bondcoat
www.BasecreteUSA.com

I can not stress enough the importance of using a waterproofing solution for concrete swimming pools. When it comes to the technical process of waterproofing concrete pools Basecrete is the most effective product that I know of. I strongly endorse the use of Basecrete products to all concrete pool owners.

- Swimming Pool Steve


LightStream swimming pool financing
www.LightStream.com

Pool installations can be very expensive especially when you start to add optional extras. Building a pool is a once in a lifetime event for most people and it is important to get the pool you want. Swimming pool financing can help you get the pool you want and make sure you have the money you need to do it right the first time.

- Swimming Pool Steve


Pool Supplies Canada
www.PoolSuppliesCanada.ca

When it comes to ordering pool and spa supplies online in Canada www.PoolSuppliesCanada.ca is by far the best option. They carry everything from chemicals to replacement pumps to entire pool kits, with free shipping options and more "in stock" items than any other Canadian online retailer.

- Swimming Pool Steve