Our 20-inch standard two-stage filter housing (TOP-201D-LTB) is the core filter housing for high-flow two-stage water purification systems. The top cover is precision-injected polypropylene, offering excellent structural strength and chemical resistance, protecting against common waterborne chemicals. The filter cartridge is constructed from PET and polypropylene. The PET portion offers excellent light transmittance, allowing users to visually inspect the contamination level of the filter element, while the polypropylene portion enhances impact resistance and overall stability.
The double O-ring design (NBR seals) undergoes rigorous sealing testing to ensure leak-proof operation within the operating pressure range, providing a double seal for the filter housing. Universal BSP/NPT thread connections allow for selection of various interface specifications to meet specific installation requirements, compatibility with a variety of piping systems, and simple and efficient installation without the need for complex tools.
Our factory adheres to a strict quality management system, with rigorous quality inspections at every stage, from raw material procurement to finished product assembly. For example, the filter housing undergoes pressure testing to simulate maximum operating and burst pressures, ensuring safe operation even under extreme pressures. The sealing performance of the seal ring is 100% inspected to prevent leaks.
This filter housing is suitable for applications requiring high-flow dual-stage filtration, such as commercial water purifiers and large household water purifiers. It can be paired with 20-inch filter cartridges with different functions (such as PP cotton + activated carbon) to form a dual-stage filtration system, providing users with deeper water purification. It is an indispensable component in high-flow dual-stage water purification equipment.
