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Pentek

Pentair Pentek WS-10, 10" Water Softener Cartridge, 10" x 2.5"

  • Based on 158 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, May 26
Order within 9 hours and 17 minutes
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Style: 10 Inch x 2.5 Inch


Features

  • CARTRIDGES USE a sodium based, non-solvent rinsed softening resin to reduce hardness, minerals and scale deposits in low flow rate applications
  • FITS All 10" Slim Line or standard housings and can replace any 10" x 2.5" water softener cartridge
  • CARTRIDGE STYLE DESIGN PROVIDES A CONVENIENT SOLUTION for delivering softened water to protect sensitive water delivery equipment
  • DESIGNED TO ALLOW OPTIMAL CONTACT between water and resin surfaces, ensuring maximum ion exchange
  • 750 GRAIN CAPACITY. Cartridge utilizes single-use resin technologies for maximum life grains capacity

Description

Pentair Pentek WS Series Cartridges are designed to allow optimal contact between water and resin surfaces, ensuring maximum ion exchange. The internal expansion pad minimizes channeling, while the post-filter eliminates any potential for bypass. Designed for low water usage, these units will easily deliver softened product water through the use of a sodium based, non-solvent rinsed softening resin. The cartridge style design provides a convenient solution for delivering softened water to protect sensitive water delivery equipment. Water Softening Cartridges provide superior performance and outstanding protection for medical equipment, coffee and espresso appliances, low volume beverage and commercial food service machines.

Material: Cation Resin


Product Dimensions: 2.5"D x 2.5"W x 10"H


Item Weight: 1 Pounds


External Testing Certification: NSF


Product Benefits: Removes Impurities


Model Number: WS-10


Product Benefits: Removes Impurities


Brand Name: Pentek


UPC: 051678319031 807034599025


Global Trade Identification Number: 31


Unit Count: 1.0 Count


Number of Items: 1


Manufacturer Part Number: 155319-43


Item Type Name: Water Softener 10”Cartridge, 155319-43


Manufacturer: Pentek


Material Type: Cation Resin


Item Dimensions D x W x H: 2.5"D x 2.5"W x 10"H


Item Weight: 1 Pounds


External Testing Certification: NSF


EU Spare Part Availability Duration: 2 Years


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 26

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Similar Products

Top Amazon Reviews

    • They really work
Style: 20 Inch x 4.5 Inch
I was skeptical about this filter. I feared that (1) it wouldn't filter well, or it would have a reduced flow rate compared to the activated carbon filter that we were using. And (2) I feared that the "water softening" claim would be a gimmick of some sort. However, I am very pleased that this filter performs as claimed. The flow rate is slightly higher than the pleated/carbon filters that we replaced. The filtering is fine, with no noticeable increase in solids. And the filtered water is actually soft. We can lather in the shower; the dishwasher actually works now; the clothes washing machine produces better results. I will buy these again -- this is now our preferred filter. We live in northeast Wyoming right next to a creek. Our well is only 20 feet deep, and we are basically drinking creek-water. So, we depend on the big blue filter and a UV-lamp system to make our water potable. With activated carbon filters and the UV system, we were safe. But the water was very hard. We don't have room for a traditional water softening system without major remodeling. So, this filter provides a convenient upgrade. Yes, the filters are expensive, but in my opinion, they are a good value. ... show more
Reviewed in the United States on June 5, 2016 by Dr. Cap Smith
    • This does work well! If you want to 'recharge' the resin with salt water, there is one trick you have to do first.
Style: 10 Inch x 2.5 Inch
This absolutely softens our hard FL water quite well... although keep in mind the low (750 grain) capacity. Get a water analysis kit to see how useful it will be for you... for instance, the water quality kit showed our water have approximately 20 grains per gallon. 750/20 = 37.5 gallons of softened water before the resin is depleted. However, you can recharge it with salt water, greatly extending its usefulness. Do NOT just dump the cartridge in salt water like I did at first... it will not recharge (or will do so very very slowly). You need to purge the water that's already inside the filter first, then ideally fill that filter with salt water afterwards. I used a water bottle, filled it with salt water, and squeezed it gently through the top of the filter.. you really have to get it so it seals at the top of the filter. it purged out the fresh water and replaced it with salt water, allowing the resin to recharge. Works good as new after a day or so. ... show more
Reviewed in the United States on October 11, 2017 by DK3
    • Does what I need
Style: 10 Inch x 2.5 Inch
It works fine, price has been climbing and it's only an average value now, used to be a better value.
Reviewed in the United States on March 7, 2023 by DNolan
    • I'll buy it again.
Style: 10 Inch x 2.5 Inch
Excellent products for people who lives in areas where the water is hard, like New Jersey and Florida. Don't forget, it is just an addition to your current water filtration system.
Reviewed in the United States on June 19, 2025 by Frank Paulino
    • Doesn't work
Style: 10 Inch x 2.5 Inch
I have successfully used this specific product before and it worked great. However, this time the first one I ordered did not work so I ordered another one under the assumption that I just got a bad one. Same thing again. I then ordered a different vendor's softener cartridge and it worked fine. It is possible that the seller got a bad batch and that the two I ordered a few days apart came from the same bad batch. However, keep this in mind should you decide to order one. ... show more
Reviewed in the United States on March 1, 2020 by Charles Rimpo
    • Fixed my hard water problem
Style: 10 Inch x 2.5 Inch
My water was so bad I had to clean out my water heater tank every 3 months. I tried this cartridge and it's been 9 months and There's barely any residue on the heating element.
Reviewed in the United States on November 9, 2024 by Bruce L.
    • Works like the expensive Cascadian filter
Style: 20 Inch x 4.5 Inch
Installed just like the hugely expensive filters. Same great taste. I can do these myself. Plumber said he needed to install the filters at a cost of $700.00. Guess what these work, taste great and I can save $600.00. Yea whoo
Reviewed in the United States on May 30, 2024 by Amazon Customer
    • Open this immediately - my second filter totally smashed - Filter does an OK job
Style: 20 Inch x 4.5 Inch
Review Image by BAR9701
Review Image by BAR9701
I have used these filters to reduce the hardness in our water in our condo (which cannot support the traditional Water softener that requires salt to be replaced and a large space. You have to change these filters frequently as their life span is limited. I re-ordered two of the Pentek WS--20BB (I always try and have one in reserve as I measure the hardness of the water and sometimes I have to replace the filter in advance of the manufacturers recommended number of gallons it will process). I opened the first box upon receipt and installed it in my Big Blue. The filter you will find is not perfect but it does an adequate job in a condo environment (better than nothing) and it cut the hardness of our water in half (clothes are cleaner, dishes do not cloud, etc.). I just arrived at the recommended replacement point (more than 30 days later), based on water flow rate and the second WS-20BB filter was smashed and damaged - see pictures. My recommendation - first, open these filters immediately upon receipt and thoroughly check for damage. Second, DO NOT ORDER TWO or MORE at a time. Amazon needs to pack these filters with some padding when sending more than one filter (BTW - there is no padding in the packing the box the filter is delivered) as the filters are very heavy, which probably attributed to the damage to the top of the second filter which was leaking "brown" sand type material used in the water softener process. ... show more
Reviewed in the United States on September 14, 2021 by BAR9701

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