FH4200BL38 Standard 10" Filter Housing
The Watts FH4200BL38 Flowmatic housing is engineered for residential water treatment with thick-walled, heavy-duty polypropylene construction that resists cracking and chemical degradation. Designed for 10" x 2.5" filter cartridges, this standard blue housing features 3/8" NPT inlet/outlet ports and compressible EPDM O-rings for secure, leak-free operation up to 100 PSI.
Built for Durability and Chemical Resistance
FDA-Grade Polypropylene
Heavy-duty construction with thick side walls and reinforcing ribs for superior strength and longevity in demanding applications
Buttress Thread Design
Secure cap-to-sump connection with compressible EPDM O-rings in cap, sump, and top seat for reliable, leak-free sealing
Chemical Resistant
Resists most acids, alcohols, ammonia, oils, and plating solutions for versatile use in residential water treatment
Wide Temperature Range
Operates reliably from 40°F to 100°F (4°C to 37.8°C) in standard residential water conditions
3/8" NPT Ports
Standard threaded inlet and outlet connections for straightforward integration with residential plumbing systems
Standard 10" Cartridge Fit
Accommodates all standard 2.5" diameter x 10" length filter cartridges for sediment, carbon, and specialty filtration
Universal Standard Cartridge Housing
The Watts FH4200BL38 accepts any standard 10" x 2.5" filter cartridge from manufacturers including Watts, Pentek, Hydronix, Culligan, and 3M. Ideal for whole-house sediment filtration, point-of-use carbon filtration, well water treatment, and pre-filtration for reverse osmosis systems. Non-pressure relief valve style. Maximum operating pressure 100 PSI.
Watts has been engineering reliable water treatment components for over 140 years, trusted by professionals and homeowners worldwide.
