Fleck has been a trusted name in water treatment since Founded 1964, based in United States. As part of Pentair, Fleck benefits from extensive R&D and manufacturing resources. The brand is particularly known for The world's most widely installed water softener control valves, especially the iconic Fleck 5600SXT. Fleck is positioned in the mid-range price tier, making it a solid mid-range option for water treatment.
Fleck Water Treatment
by PentairFleck manufactures water softener control valves that are the backbone of residential and commercial water softening systems worldwide. The Fleck 5600SXT is the best-selling residential softener valve, offering metered demand regeneration for efficient salt and water usage. Their lineup includes the 2510SXT, 2850, and 9100SXT twin-tank models for higher-capacity and commercial applications.
Mid-RangeBalanced quality and affordability
Fleck Water Treatment Product Lines
5600SXT Control Valve2510SXT9100SXT Twin Tank2850 Commercial7000SXT
Why Choose Fleck for Water Treatment?
Fleck stands out in the water treatment market because of The world's most widely installed water softener control valves, especially the iconic Fleck 5600SXT. Their products carry 3 industry certifications, including NSF/ANSI 44, WQA Gold Seal, CSA Certified, giving homeowners confidence in quality and compliance. Fleck backs their water treatment with a 5-year limited warranty on control valves; 10-year on tanks, which shows commitment to long-term reliability. With 5 dedicated product lines — 5600SXT Control Valve, 2510SXT, 9100SXT Twin Tank, 2850 Commercial, and more — there's a Fleck option for virtually every need and budget.
Certifications & Standards
NSF/ANSI 44WQA Gold SealCSA Certified
Warranty & Support
Warranty5-year limited warranty on control valves; 10-year on tanks
Phone Support1-262-238-4400
Official Websitehttps://www.pentair.com/en-us/brands/fleck.html
Where to Buy Fleck Water Treatment
Water Treatment How-To Guides
View All →How to Install a Reverse Osmosis System
Install an under-sink reverse osmosis system for the cleanest drinking water at home -- feed water connection, filter mounting, storage tank, drain saddle, dedicated faucet, and the critical initial flush.
How to Test Your Water Quality
Test your water with DIY strips, reagent kits, or certified lab analysis -- what to test for, how to collect samples, how to read results, and what treatment actually fixes common contaminants.
How to Change Water Filter Cartridges
Swap out sediment, carbon, and specialty cartridges in whole-house and under-sink systems -- the right filters, the right schedule, and the correct order for multi-stage setups.
Common Water Treatment Problems
View All →Bad Taste or Odor in Water
Water that tastes or smells off -- chlorine, rotten eggs, metallic, musty -- has a specific cause for each type. Identifying what it tastes or smells like is the fastest path to the right fix.
Hard Water Buildup
White, chalky deposits on everything -- faucets, shower heads, glass doors, inside pipes and water heaters. Calcium and magnesium restrict flow, kill efficiency, shorten appliance life. About 85% of US homes have hard water.
Low RO System Output
RO system filling slowly, weak trickle, or running out of water? Clogged pre-filters, worn membrane, low feed pressure, or waterlogged tank. Most fixes are filter replacements or pressure adjustments.
Water Treatment Types
View All →Water Treatment Buying Guides
View All →Fleck Water Treatment FAQ
Is Fleck a good brand for water treatment?
Fleck is the world's most recognized brand of water softener control valves, now part of Pentair. Founded in 1964, Fleck control valves are the heart of water softening systems used in millions of homes and businesses worldwide. The Fleck 5600SXT is widely considered the industry-standard residential water softener valve. Fleck valves are sold to water treatment dealers and system builders who assemble complete softener systems around these reliable, field-proven controls.
What warranty does Fleck offer on water treatment?
Fleck offers 5-year limited warranty on control valves; 10-year on tanks.
Where is Fleck made?
Fleck is based in United States, headquartered in Brookfield, Wisconsin.
What price range does Fleck water treatment fall into?
Fleck is positioned in the mid-range price tier for water treatment. They balance quality and affordability well.
What water treatment product lines does Fleck offer?
Fleck offers 5 water treatment product lines: 5600SXT Control Valve, 2510SXT, 9100SXT Twin Tank, 2850 Commercial, 7000SXT.
What certifications does Fleck have for water treatment?
Fleck holds 3 certifications including NSF/ANSI 44, WQA Gold Seal, CSA Certified.