








⚡ Elevate your pump game—set it, forget it, and stay dry!
The FLUENTPOWER Vertical Mechanical Float Switch is a versatile, plug-and-play solution designed to automate submersible and sewage pumps. Featuring a 10-foot piggyback cord, universal compatibility, and a pumping range from 5.8" to 0.75", it ensures reliable, hands-free water management in tight spaces. Complete with mounting hardware and a stainless steel clamp, this durable float switch transforms manual pumps into smart, automatic systems—perfect for modern homes and professional setups alike.
















| ASIN | B0C536CV8R |
| Batteries Required? | No |
| Best Sellers Rank | #63,252 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Water Pump Accessories |
| Brand | FLUENTPOWER |
| Color | Black |
| Customer Reviews | 4.4 4.4 out of 5 stars (113) |
| Date First Available | June 28, 2023 |
| Included Components | float switch with a piggyback plug, two mounting brackets for pump or pipe, stainless steel hose clamp, and four screws |
| Item Weight | 1.3 pounds |
| Item model number | FSK-16 |
| Manufacturer | FLUENT TOOLS |
| Material | Plastic |
| Maximum Lifting Height | 10 Feet |
| Power Source | Corded Electric |
| Product Dimensions | 3.54"L x 2.76"W x 11"H |
| Style | Vertical Switch |
| Voltage | 110 Volts |
E**2
Great for tight spaces, generous leverage for adjustment.
There is a section in my backyard that tends to flood. I was getting tired of manually turning on and off my sump pump. I stumbled upon these switches quite by accident when I was contemplating buying an entirely new pump with a float on it to regulate when it would go on and off. I'm glad I did. With a little creativity and a worm clamp I was able to fasten it to the outgoing 1/2 inch pipe and extend it further enough away from the pump itself and still have plenty of room for the float to move freely up and down. I only had a small amount of space to work with 12x12 all around with about 1.5 feet deep. It fit perfectly and operates flawlessly! I may need to adjust the height a little bit but for now it's working perfectly and I no longer have to babysit it to manually turn it off to prevent motor burn out. It is a set-it- and-forget-it deal!
G**7
Grinder pump switch
Fitted problem with grinder pump. Reasonable price and easy install.
M**E
Easy installation
Works like a charm
D**S
Great retrofit for Harbor Freight pump
I was able to retrofit a 1 hp Harbor Freight trash pump with this switch, which allows me to pump the water out of my sump pit to within an inch or so of water. If you’re familiar with that style pump, you know that it has an 8 inch cord with a float attached to it. This makes it impossible to pump the water down any lower than about a foot deep. That’s just not practical. I drove a gutter spike into the top of my sump pit and lashed the original float switch into the up position. One pro tip though. The switch doesn’t work if it’s anything less than vertical. Initially it kept getting situated at a slight angle and it would get stuck in the up position every time my yard flooded. I solved this by driving two pieces of rebar into the pit and securing my pump to the bars to keep it from twisting every time it kicked on. Another consideration is that my pump is about 12 inches tall. I don’t think that this switch would fit anything much shorter than that. Overall, I am very happy with this retrofit and would definitely recommend it to anyone looking for a similar solution.
B**S
Working great for a year now
Been working fine for about a year now. I don't have any complaints about it at all.
K**A
Great purchase!
Bought a older home with a sump pump, the float failed and our a basement flooded. I wasn't aware that you could buy a piggyback float for the sump pump, figured we would give it a try... Super easy to install and works great. Super happy with this purchase. Thank you!!!
J**H
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Good float switch.
R**O
Well Suited for my Narrow Sump Pit
I usually include a picture in my reviews but a photo of my slimy sump pit is not very appealing. I give this float switch a 5 star rating because it is a simple compact design that fit nicely next to a 1/3 hp pump in a very narrow 12 inch diameter pit.
J**K
Easy to assemble and install. Installation hardware needed is provided in the package. Installed Dec 31, 2025. Properly functioning on install. Used it to replace a Liberty switch on a Liberty S37 sump pump. The original switch only lasted 12.5 months. Hopefully this switch lasts longer!!
S**N
Easy install and works good. Very happy so far.
J**Y
Does what it's supposed to.
R**O
not the oem for my redlion pump but with a little modification it did the job . my pump is back in business just like new
J**K
Got 2 months on this item it failed and flooded my restaurant kitchen ohhhh my what a mess
Trustpilot
2 months ago
1 week ago