Our 20-inch standard single-stage blue filter housing (TOP-201S-LB) is a crucial filter housing for high-flow water purification systems. Both the top cover and filter cartridge are made of polypropylene through precision injection molding. Polypropylene offers excellent chemical resistance, effectively resisting the effects of acids and alkalis in water. It also offers excellent temperature resistance, ensuring stable operation within a water temperature range of 4.4°C to 49°C. The blue filter cartridge design reduces light ingress, minimizing the risk of algae growth within the housing and extending the filter element's lifespan.
The double O-ring design (made of NBR) ensures excellent sealing performance and undergoes rigorous testing to ensure leak-free operation under operating pressure. BSP/NPT thread connections allow for a variety of port sizes to meet specific installation requirements, making it compatible with a variety of piping systems. This facilitates installation and reduces both effort and time.
We implement stringent quality control measures throughout the production process. Every filter housing component undergoes dimensional inspection to ensure assembly accuracy, and finished products undergo pressure and seal testing to ensure performance meets standards. For example, pressure testing simulates maximum operating and burst pressures to ensure the filter housing can operate safely even under extreme pressures.
This filter housing is suitable for applications requiring high-flow filtration and mitigating algae growth, such as commercial water purifiers and large household water purifiers. It can be used with various 20-inch filter cartridges to form a single-stage filtration system, providing users with water purification services. It is an economical and practical component choice for high-flow water purification equipment.









