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  • US Water Big Blue Commercial Filter Housing 4.5 x 20 | H-4520

US Water Big Blue Commercial Filter Housing 4.5 x 20 | H-4520

SKU 300-H-4520-KIT

In Stock


4.5" X 20" Commercial-Grade Single Big Blue Cartridge Filter Housing

With 3/4" or 1" Inlet/Outlet - Includes Pressure Relief Valve, Mounting Bracket, Wrench, and Screws

The US Water 4.5 x 20 Big Blue Cartridge Housing is a Commercial Grade Housing that will handle heavy filtration needs for years. It accepts any industry standard 4.5 x 20 filter cartridge which includes, pleated, melt blown, string, gradient density, carbon and any number of specialty filters. A full listing of all the filters available is found HERE.


  • Manufactured from the highest quality, FDA grade, 100% NSF listed polypropylene
  • Leak-proof sealing is accomplished by compression against a top seated Buna-N O-ring located in the housings sump Thick wall and added ribs make the housings ideal for a wide range of applications
  • Buttress Thread Design Provides Superior Sealing & Greater Security
  • Polypropylene construction provides excellent chemical resistance with most acids, alcohol, ammonia, oils, plating solutions and many aggressive chemicals
  • Housings supplied with pressure release valves Rated for temperatures to 100°F and pressures to 90 psi
  • Black Cap/Blue Sump 3/4" or 1" Inlet & Outlet Uses the same cartridges as Ametek, American Plumber, Culligan, Flowmatic, Hydronix, Liquatec, Pentek and Watts, as well as most other brands of housings.
  • Equivalent to Flowmatic Part # FH10000BB1PR, Hydronix HF45-20BLBK10PR and Pentek Big Blue HFPP Part #150233, 150239, 150235

NOTE: This housing does not include a filter. Choose any 4.5" x 20' listed below under "Related Products". If you are unsure what type of filter would be best for your application, contact one of our Certified Water Specialists at 800-608-USWA or e-mail us at info@uswatersystems.com. Our experts are available 7 days a week from 8 AM until 11 PM EDT. Packed 4 to a case - CALL FOR DISCOUNT PRICING ON CASE QUANTITIES OR MULTIPLE CASES.

American Made


Filter Size

4.5 x 20

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