Best S Steel Cluster Filter CF-21

Flange in/outlet available
Housing Material: SS304, or SS316 on request.
The entire set of filter cartridges is removed at one time for cleaning replacement.
Working Temperature: 1~50°C


  • Combination cyclone separator and cartridge filter in a single compact design
  • Patented Up-flow design with tangential entry – prevents air entrapment
  • Rotational flow “flutters” media pleats – improving loading performance
  • Electropolished 304 stainless steel housing
  • Fail-Safe lid closure, rated for 150 psi
  • CPVC standpipe (standard) – stainless steel optional
  • Three sizes for greater media surface area
  • Extensive choice of cartridge micron ratings and media, including carbon block


  • Commercial/Residential Drinking Water
  • Industrial Waste Water Treatment
  • Surface Water Treatment Rule (SWTR) LT2
  • Process Water Cooling Tower Filtration
  • Whole House Filtration
  • Reverse Osmosis Pre-filtration
  • Desalination Pre-filtration (316 and coated options)
  • Ground Water Remediation
  • Ground Water Under Direct Influence (GUDI)
  • Well Water
  • Small Community Compliance LT2


  • Electropolished 304 stainless steel
  • Standpipe – CPVC (standard)
  • Temperature – 140˚F (60˚C) max. Up to 250˚F (121˚C) with optional stainless steel standpipe and high-temperature cartridges installed
  • Wing nuts – brass
  • Rim gaskets – EPDM (Buna-N, Viton available)
  • BSTP optional
  • Gauge sample ports (1/4”), inlet, and outlet
  • Pressure – 150 psi (10 bar) max.


  • Stainless Steel Stand Pipe For High Temperature
  • 316 Stainless Steel
  • 3M Scotchkote 134 Fusion-Bonded Epoxy Coating (specifically for sea water and chemical compatibility)
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Welcome to our guide on the best S Steel Cluster Filter CF-21. If you’re looking for a high-quality stainless steel cluster filter to improve the quality of your water, you’ve come to the right place. In this article, we will explore the features, benefits, and why the S Steel Cluster Filter CF-21 is the top choice for many homeowners.

Why Choose the S Steel Cluster Filter CF-21?

When it comes to water filtration, the S Steel Cluster Filter CF-21 stands out from the competition. Here’s why:

  1. Advanced Filtration Technology: The S Steel Cluster Filter CF-21 utilizes advanced filtration technology to remove impurities, sediment, chlorine, and other harmful substances from your water. This ensures that you and your family have access to clean and healthy water for drinking, cooking, and other household uses.
  2. Stainless Steel Construction: Built with durable stainless steel, the CF-21 cluster filter is designed to last. It is resistant to corrosion and can withstand high water pressure, making it suitable for long-term use.
  3. Efficient Cluster Filtration: The CF-21 cluster filter employs a cluster filtration system that enhances the filtration process. It clusters water molecules together, allowing for more effective removal of impurities and ensuring a higher flow rate.
  4. Easy Installation and Maintenance: Installing the S Steel Cluster Filter CF-21 is a breeze. It comes with clear instructions and all the necessary components for a hassle-free setup. Additionally, the filter requires minimal maintenance, saving you time and effort.
  5. Long Filter Lifespan: The CF-21 cluster filter has an impressive filter lifespan, reducing the frequency of filter replacements. This not only saves you money in the long run but also minimizes waste.

How to Use the S Steel Cluster Filter CF-21

Using the S Steel Cluster Filter CF-21 is straightforward. Follow these simple steps:

  1. Installation: Start by selecting a suitable location for the filter, preferably near the water source. Connect the filter to the water supply line following the provided instructions. Ensure a secure and leak-free connection.
  2. Initial Flushing: Before using the filter for the first time, flush it with water for a few minutes to remove any loose particles or carbon fines.
  3. Regular Maintenance: While the CF-21 cluster filter requires minimal maintenance, it’s essential to periodically clean the filter housing and check for any signs of wear or damage. Replace the filter cartridge according to the manufacturer’s recommendations.
  4. Enjoy Clean Water: With the S Steel Cluster Filter CF-21 in place, you can now enjoy clean and filtered water throughout your home. Experience the difference in taste, clarity, and overall water quality.


Investing in the best water filtration system is crucial for ensuring the health and well-being of your family. The S Steel Cluster Filter CF-21 offers advanced filtration technology, durability, and easy maintenance, making it an excellent choice for homeowners. Upgrade your water quality today with the CF-21 cluster filter.

Remember to regularly check and replace the filter cartridge to maintain optimal filtration performance. Enjoy the benefits of clean and healthy water with the S Steel Cluster Filter CF-21!