Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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US Filter BFS-201 and BFS-301 Under Counter Drinking Water Filter Systems

US Filter BFS-201 and BFS-301 Under Counter Drinking Water Filter Systems

U.S. Filter BFS-201 and BFS-301 Under Counter Drinking Water Systems Have Been Replaced by the Pentek BFS-201 and BFS-301 Under Counter Water Filtration Systems

Also Replaces The BFS-201 and BFS-301, Culligan and Plymouth Under Sink & Under Counter Drinking Water Filter Systems

Ametek is a trade name that is no linger used in the water filtration industry.  Ametek was under the name of US Filter for a period of time before finally becoming known as Pentek.  All Ametek and US Filter branded drinking water filter systems are compatible for use of the Pentek brand of replacement water filters, reverse osmosis membranes and DIY service parts.

Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.





Ametek is a trade name that is no linger used in the water filtration industry.  Ametek was under the name of US Filter for a period of time before finally becoming known as Pentek.  All Ametek and US Filter branded drinking water filter systems are compatible for use of the Pentek brand of replacement water filters, reverse osmosis membranes and DIY service parts.